In urban and suburban settings, trees can provide shade and beauty, but their roots often pose a significant threat to pavements, causing unsightly and hazardous uplifts. This guide explores effective strategies to prevent and address pavement lift from tree roots. Learn how to protect your hardscape, ensure safety, and maintain curb appeal while ensuring your trees are an actual benefit to your urban space.

Related: Top Products for Tree Root Management

What is Pavement Lift?

Pavement lift refers to the situation where sections or segments of paved surfaces, such as roads, sidewalks, or driveways, are raised or uplifted unevenly and has been displaced from its original position due to external factors.

What is Root Heave?

Root heave is a phenomenon where tree roots beneath the ground exert upward pressure as they search for nutrients, water and oxygen, causing pavements and urban infrastructure like sidewalks and driveways to lift and crack. This can lead to safety hazards and aesthetic issues, making it crucial to understand and address how to plant a tree to avoid root heave

How to Stop Root Heave?

Preventing root heave is far more effective and cheaper than dealing with it after the fact. By adopting the right strategies and planting techniques below, you can avoid the costly upheaval and damage caused by tree roots, ensuring the longevity of your pavement.

Ways to Prevent Tree Roots Causing Pavement Lift

Safeguarding your sidewalks from tree root damage requires a thoughtful proactive approach before the tree is even planted in the ground. Below we’ve detailed several methods that can be employed to prevent tree roots from undermining the stability of your pavement and urban infrastructure.

Use Soil Vault Systems

Using Soil vaults systems otherwise known as soil cells such as those developed by Citygreen allow tree roots to grow in ideal growing conditions while protecting surround infrastructure from tree root disturbances.

A top use case for soil vault systems is that it is rated for vehicle loads so it’s great for street pavements, carparks, and stormwater management.

Download the free Stratavault PDF Tech sheet to better understand how to use stratavault soil cells to stop pavement heave and grow better urban trees.

Proper Positioning of your Trees

Choosing the right location for tree planting is essential to prevent root-related problems. Proper positioning can minimize conflicts between tree roots and sidewalks, leading to a harmonious coexistence.

Properly positioning trees to avoid pavement lift and reduce conflicts with sidewalks and pavements is a critical step in urban tree management. Start by selecting tree species with non-invasive root systems, and consult with local experts for guidance. Reach out to your local government parks department or urban forester as they will be more then happy to send you a list of trees that are ideal for growing in your local climate.

Maintain a safe distance of at least five to ten feet between the tree base and nearby hardscape, allowing roots to develop without initially compromising pavement stability. Analyze soil conditions to ensure well-draining soil with adequate organic matter, which encourages healthy root growth away from pavements. We recommend using loamy soil but you can see our article on choosing the best soil for your tree here.

Plant trees at the right depth, avoiding shallow planting that may lead to horizontal root spread and deeper planting to promote root growth away from the surface. Regularly monitor root growth patterns and consider professional assistance to assess local conditions and choose suitable species and planting techniques. Well-structured tree pits with features like root barriers and proper drainage can direct root growth downwards away from infrastructure, ensuring a harmonious coexistence.

Related: How do Tree Roots Behave?

Bridging

Bridging is a technique that creates a buffer zone between tree roots and pavements. This method involves installing materials that allow roots to grow beneath the sidewalk without causing upheaval. Creating a slope for your sidewalk involves the strategic use of posts, piers, or arch supports. These supports serve as the foundation for laying the sidewalk material, leaving deliberate space for the roots to grow beneath without causing disruptions.

One notable benefit of root bridging is its capacity to preserve existing tree roots, ensuring their continued health and enhancing overall stability. The choice of bridging materials can vary based on specific project requirements, including desired height, repair area length, and available budget. Commonly employed materials encompass wood, concrete, and composite materials.

However, it’s important to note that the design and construction of root bridging can be a relatively costly endeavor. In cases where the bridge elevation aligns with a typical step height (approximately 6 to 8 inches) relative to the surrounding grade, the installation of safety railings may be necessary. In certain scenarios, the incorporation of soil can be employed to seamlessly blend the bridge edge with the surrounding terrain, effectively eliminating any abrupt step-off points.

As root bridging can be expensive and incorporate alot of safety factors, it’s better to plan your tree planting to ensure that the trees roots have the best chance of growing deeper to never distrub the surface.

Root Barriers

Barriers such as Root Directors or Reroot Barriers are a great preventative measure designed to direct and guide exploring roots down and away from services and infrastructure. They are best installed when the tree is newly planted so when the roots expand and reach the barriers they will be directed deeper into the soil instead of staying in the upper levels of the soil.

Installing Snorkils also help greatly in enticing the tree roots to explore downwards to help avoid pavement lift as the Snorkil gives access to oxygen and water at a lower depth so the roots don’t have to keep near the surface to access the nutrients it needs to survive.

Reinforcing Collars

Similar to Root Barriers reinforcing sidewalks with concrete collars or gravel aggregate helps deter tree roots from growing beneath them, thus preventing damage and upheaval.

Additionally, adding a layer of compacted gravel or pebbles beneath the sidewalk can create a path for tree roots to follow, reducing the likelihood of pavement damage as tree roots prefer to grow in the path of least resistance.

e.g. Trees roots grow faster in uncompacted soil when compared to compacted soil due to the tree having to expend less energy to push through the soil in search of oxygen, nutrients, and water.

Tree Removal

In cases where tree roots pose an imminent threat to pavements, roads or infrastructure; where there is direct safety issues involved, tree removal or relocation may be a necessary but last resort option to prevent further damage.

What to Avoid When Dealing with Tree Roots

Understanding what not to do when dealing with tree roots is as crucial as knowing the right techniques. Certain actions can exacerbate the problem and lead to more significant damage.

For example, removing too much of a tree root could create a void space that can no longer support the above pavement which cause create further issues.

Tree Care Services Can Help Prevent Damage to Your Property

Professional tree care services can provide expert guidance and assistance in managing tree roots and preventing damage to your property. Their expertise can be invaluable in maintaining both your trees and pavements.

Tree Roots Pushing Up Driveway – What To Do

If tree roots are causing your driveway to heave and crack, specific actions can help address the issue, restoring the functionality and appearance of your driveway.

First Signs of Tree Root Damage

Recognizing the early signs of tree root damage is essential to address the issue promptly.

The initial signs of tree root damage to pavements and driveways can vary depending on the severity of the issue, but common early indicators include cracks, uneven surfaces, and pavement shifting.

The most noticeable sign of such damage is often cracking or sections of pavement lift that are uneven or lifted. These issues can pose trip hazards and make walking or driving difficult.

In some cases, instead of uplifting, the pavement may sink or settle due to soil erosion caused by root growth. As roots expand beneath the pavement, they can create an uneven surface or pockets of air below the pavement and make it challenging to walk or drive smoothly.

Advanced cases may even reveal visible tree roots breaking through the pavement surface or pushing it upwards. Additionally, the pressure from tree roots can not only damage the pavement but also lead to cracks in nearby structures like retaining walls, curbs, or foundations.

Plan Ahead to Avoid Tree Root Damage to Urban Infrastructure

Effective planning and design are key to avoiding tree root damage causing pavement lift. By taking precautions during the initial stages, you can prevent future issues.

At Citygreen, we are the industry leaders in designing urban landscapes that protect both the tree and the urban infrastructure. If you are looking to understand the range of tools you can employ to reduce tree root damage over the long term we recommend booking a 1-hour discovery call with our team.

Kill the Tree Root with Copper Sulfate

Copper sulfate, a cost-effective herbicide and algaecide, is commonly used to clear tree roots from sewer lines and pavements. However, before use, check local regulations due to its potential toxicity and environmental impact. Inspect your local area to assess the root infestation’s severity. Be cautious around pets, as it can be toxic to animals.

Test the sewer line by flushing the toilet, and repeat treatments if needed. Periodically flush copper sulfate to prevent new root invasions, and consult various references for further information on its use.

Remove the Root

Removing the offending tree root is a direct but sometimes necessary solution to eliminate damage and upheaval caused by tree roots. ensure the structural integrity of the tree isn’t compromised.

Landscape architects are experts in designing and creating beautiful, sustainable landscapes. One of the essential components of their work is planting trees in urban environments. Trees provide numerous benefits to the urban environment, including enhancing air quality, reducing stormwater runoff, and providing shade and habitat for wildlife. In this section, we will explore how landscape architects plant trees and the techniques they use to ensure their success.

Key Takeaways:

• Landscape architects play a crucial role in planting trees to create sustainable and healthy environments.
• Proper selection of tree species, planting techniques, and maintenance are essential for the long-term health of trees.
• Landscape architects navigate unique challenges when planting trees in urban environments.
• By following best practices in tree planting, we can contribute to a greener and healthier future.

The Importance of Tree Planting for Urban Landscapes

Tree planting is an essential component of creating sustainable and healthy environments, especially in urban areas. Landscape architects follow best practices to ensure the successful establishment and growth of trees, including sustainable tree planting and urban tree planting.

One of the critical tree planting best practices is selecting appropriate tree species. Landscape architects carefully choose the tree species that are well-suited to the local climate and site conditions. They prefer native tree species as they provide numerous benefits, such as supporting local wildlife and improving biodiversity.

Soil and tree root preparation is crucial for sustainable tree planting. Landscape architects use innovative techniques like soil cells, such as Stratavault or soil vault systems, to ensure adequate space for root growth and improve soil quality. This is especially important in urban areas where soil compaction and pollution can be a significant challenge.

Tree roots are opportunistic, seeking out favorable growing conditions. Moisture trapped beneath impermeable pavements, oxygenated sand layers, moist conditions in service trenches, cracks in road pavements and curbs- these are some areas that tree roots will explore to satisfy the life needs of the tree which leads to pavement and infrastructure damage.

Landscape architects also employ various tree planting techniques to ensure proper tree planting. This includes preparing the hole properly, handling the root ball, and planting the tree at the correct depth. These techniques promote healthy root development and establish strong trees.

Proper maintenance is crucial for the long-term health of planted trees. Landscape architects monitor the trees for signs of stress, pests, or diseases. They provide necessary pruning, fertilization, and irrigation to ensure optimal growth and resilience. Moreover, they also consider factors like site conditions and tree spacing to optimize the tree’s health and longevity.

Overall, landscape architects prioritize sustainability in tree planting projects to ensure that the planted trees contribute to a resilient and environmentally friendly landscape. By following their best practices, we can contribute to a greener and healthier future.

Selecting Tree Species for your Landscape

When it comes to planting trees, landscape architects carefully consider which tree species to select. Native tree species are often preferred, as they are better adapted to the local climate and conditions and can provide numerous benefits. In fact, selecting the right species can make all the difference in the success of a tree planting project.

Native trees also support local wildlife and improve biodiversity. They are often hardier than non-native species, able to withstand harsh weather conditions and local pests and diseases. Additionally, native species are more likely to support the specific ecology of the area, including pollinators like bees and butterflies.

Related: Best Species for Reducing Air Pollution

However, it’s not just about selecting native species. Landscape architects also take into account factors such as tree growth rate, size, and appearance to ensure the right tree is selected for the right location. They also consider the soil conditions and water availability, as well as any potential hazards that may impact the growth of the tree.

By carefully selecting the appropriate tree species, landscape architects can create healthier and more resilient urban forests. Not only do these trees provide environmental benefits, but they also contribute to the beauty of our urban landscapes.

Tree Planting Techniques

Proper tree planting techniques are essential for successful tree growth and development. Landscape architects utilize various methods to ensure optimal tree health.

One crucial technique is proper hole preparation. The hole should be dug to the appropriate depth and width, allowing enough space for the roots to spread out. The root ball should be handled carefully to prevent damage. The edge of the root ball should be lightly hand brushed to bring all the fine roots out and larger structural roots at the edge of the root ball should be pruned if their roots are facing inward to avoid root swirl. We do this to ensure once the tree is planted in it’s new surroundings new growth is focused on growing outwards into new soil.

Correct planting depth is also important. The topmost root of the tree should sit slightly above the soil level to prevent it from suffocating. After planting, the soil should be carefully compacted to eliminate air pockets and provide support for the young tree.

Overall, landscape architects should follow specific tree planting methods that ensure the long-term success of the planted trees.

Soil Preparation and Soil Cells

Landscape architects understand the critical role of soil preparation in ensuring successful tree planting. They use innovative techniques like soil cells to improve soil quality and provide adequate space for root growth, promoting healthy trees.

Related: How much Soil do Street Trees Need?

Soil cells are a specially designed system that provides structural support for pavements and surfaces while simultaneously providing ample space for root growth and water drainage. Stratavault and soil vault systems are examples of these systems that feature an interlocking matrix design that creates ideal conditions for soil moisture and movement.

Advantages of Soil Cells	Disadvantages of Soil Cells
* Improved soil structure and quality * Prolonged tree lifespan * Enhanced stormwater infiltration and drainage * Reduced soil compaction and increased porosity * Prevents root damage from construction or digging * Lower lifetime maintenance cost of surrounding infrastructure	* High initial installation cost

By using soil vault systems such as those created by Citygreen, landscape architects can promote healthy tree growth and create sustainable landscapes that benefit both the environment and the community.

Tree Planting Best Practices

Related: Ultimate Guide on How to Plant Trees in Urban Areas

Planting a tree is more than just digging a hole and dropping in the sapling. It requires careful consideration and attention to detail to ensure the tree has the best chance of thriving for years to come. Here are some best practices for tree planting:

• Proper Mulching: Adding a layer of organic mulch around the base of the tree can help retain moisture and suppress weeds. However, make sure to keep the mulch away from the trunk to prevent rot.
• Adequate Watering: Newly planted trees require regular watering to establish their root system. Depending on the climate and soil conditions, this may mean watering daily or a few times per week.
• Regular Maintenance: Trees require ongoing care, such as pruning and fertilization, to maintain their health and shape. Regular inspection for pests and diseases is also critical to prevent issues from becoming more severe.
• Site Conditions: Consider the specific site conditions, such as sun exposure and soil type, when selecting and planting trees. This will help ensure the tree is well-suited to its environment and has the best chance of thriving.
• Tree Spacing: Proper tree spacing is crucial to avoid overcrowding and competition for resources. Landscape architects consider factors such as mature tree size, growth rate, and root system when determining appropriate spacing.

By following these best practices, you can help ensure the long-term health and success of your newly planted trees.

Maintaining Tree Health

Proper maintenance is essential for ensuring the long-term health and vitality of planted trees. Landscape architects follow specific best practices when it comes to tree planting, and these practices extend to tree maintenance as well.

One of the most critical aspects of tree maintenance is monitoring the trees for signs of stress, pests, or diseases. Early detection and treatment are essential to prevent further damage and maintain optimal tree health. Landscape architects also provide necessary pruning, fertilization, and irrigation to promote healthy growth and resilience.

When it comes to pruning, it’s important to follow industry best practices. Incorrect pruning techniques can lead to damage and even death of the tree. Landscape architects use specialized tools and techniques to remove dead or diseased branches, promote proper growth, and maintain the tree’s overall health.

Fertilization is another critical aspect of tree maintenance. Landscape architects apply appropriate fertilizer to provide essential nutrients to the tree’s roots, promoting vigorous growth and a healthy canopy. Proper watering is also crucial, with landscape architects recommending deep and infrequent watering to promote root growth and water efficiency.

In addition to these best practices, landscape architects also consider factors like site conditions and tree spacing when it comes to tree maintenance. They take steps to prevent damage caused by lawn equipment or other external factors and ensure that the tree has adequate space to grow without competing with nearby trees or infrastructure.

In summary, proper maintenance is essential for the long-term health and vitality of planted trees. Landscape architects follow specific best practices when it comes to pruning, fertilization, and watering, and monitor trees for signs of stress, pests, and disease. By following these practices, they ensure that planted trees thrive and contribute to the overall beauty and sustainability of our landscapes.

Ensuring Sustainability

Landscape architects understand the importance of planting trees with sustainability in mind. They consider factors such as water efficiency, carbon sequestration, and the overall ecological impact when designing a planting project.

By selecting appropriate tree species and employing proper planting techniques, landscape architects create healthy ecosystems that provide numerous benefits to the environment and local communities.

But sustainability doesn’t end with the planting phase. Proper maintenance, such as regular pruning and fertilization, helps promote long-term growth and ensures the trees continue to provide environmental benefits for years to come.

By prioritizing sustainable tree planting, landscape architects contribute to a healthier and more resilient future for our planet.

Urban Tree Planting Challenges

Planting trees in urban areas can be challenging due to various factors. Landscape architects face obstacles such as limited space, soil compaction, and pollution that can affect the growth and health of trees. Despite these challenges, there are innovative techniques that can help overcome these issues.

One of the main challenges of urban tree planting is limited space. In urban environments, space is at a premium, and finding adequate space to plant trees can be a challenge. Landscape architects use techniques such as vertical planting, tree pits, and raised planter beds to create more space for tree growth.

Soil compaction is another issue that landscape architects face when planting trees in urban areas. Compacted soil can limit root growth and the ability of trees to absorb water and nutrients. Landscape architects use techniques such as soil aeration and the installation of soil cells, like Stratavault or soil vault systems, to provide more space for root growth and improve soil quality to ensure trees have the best possible conditions to thrive in urban environments.

Pollution is also a major concern when planting trees in urban environments. Air pollution can damage leaves and limit growth, while soil pollution can affect the health of tree roots. Landscape architects choose tree species that are resistant to pollution and use air and soil filtration systems to improve air and water quality.

Despite these challenges, landscape architects are committed to creating green urban environments through sustainable tree planting practices. By utilizing innovative techniques and selecting the right tree species, they can build thriving urban forests that make our cities healthier, more resilient, and more beautiful.

Conclusion

In conclusion, landscape architects are an essential part of creating sustainable and healthy environments by planting trees. By following their best practices and techniques, they ensure the successful establishment and growth of urban green spaces. From selecting appropriate tree species to employing proper planting techniques, landscape architects play a critical role in establishing thriving urban forests. Their expertise in maintaining tree health and ensuring sustainability contributes to a greener and healthier future for us all. Through their dedication and hard work, landscape architects demonstrate how planting trees can positively impact our communities and the environment. So, if you want to learn how landscape architects plant trees and help create a greener future, keep exploring and discovering!

FAQ

How do landscape architects plant trees?

Landscape architects plant trees using various techniques, such as proper hole preparation, handling root balls, and ensuring the correct planting depth. These techniques promote healthy root development and establish strong trees.

Why is tree planting important?

Tree planting is important because it contributes to creating sustainable and healthy environments. Landscape architects follow best practices to ensure successful tree establishment and growth in urban areas, considering factors such as soil conditions, water availability, and selecting appropriate tree species.

How do landscape architects select tree species for planting?

Landscape architects carefully choose tree species that are well-suited to the local climate and conditions. Native tree species are often preferred as they are adapted to the environment and provide numerous benefits, such as supporting local wildlife and improving biodiversity.

What techniques do landscape architects use for tree planting?

Landscape architects employ various techniques for tree planting, including proper hole preparation, root ball handling, and ensuring the correct planting depth. These techniques help promote healthy root development and establish strong trees.

What is soil preparation and how does it relate to tree planting?

Soil preparation is an essential step in successful tree planting. Landscape architects may use innovative techniques like soil cells, such as Stratavault or soil vault systems, to provide adequate space for root growth and improved soil quality.

What are some tree planting best practices?

Landscape architects follow specific best practices when planting trees, including proper mulching, adequate watering, and regular maintenance. They also consider site conditions and tree spacing to optimize tree health and longevity.

How do landscape architects maintain tree health?

Landscape architects monitor planted trees for signs of stress, pests, or diseases and provide necessary pruning, fertilization, and irrigation to ensure optimal growth and resilience.

How does tree planting contribute to sustainability?

Landscape architects prioritize sustainability in tree planting projects, considering factors like water efficiency, carbon sequestration, and overall ecological impact. This ensures that planted trees contribute to a resilient and environmentally friendly landscape.

What are the challenges of urban tree planting?

Urban environments pose unique challenges for tree planting, such as limited space, soil compaction, and pollution. Landscape architects employ innovative techniques to overcome these challenges and create thriving urban forests.

How do landscape architects contribute to creating sustainable landscapes?

Landscape architects play a critical role in planting trees and creating sustainable landscapes. Their expertise in selecting tree species, employing proper planting techniques, and ensuring long-term tree health results in beautiful and thriving urban green spaces.

Key Takeaways

1. Urban Trees Improve Communities:
   Planting trees in urban areas offers various benefits such as improving air quality, reducing the urban heat island effect, supporting biodiversity, enhancing property values, and promoting physical and mental health within communities.
2. Actionable Steps for Planting Urban Trees:
   Identifying suitable planting locations, selecting appropriate tree species adapted to the local climate, increasing soil quality and volume with soil cells, and educating the community on the benefits of trees.
3. Create a Long Term Maintenance Plan:
   Proper maintenance involving regular watering, pruning, monitoring for pests and diseases, and ongoing community engagement are essential for the health and longevity of planted trees. Councils should employ

Are you looking for ways to increase greenery in your city? As worldwide urban tree specialist with over 30 years, Citygreen can attest to the benefits of planting more trees in urban areas.

Not only do they help to improve air quality, reduce the urban heat island effect, but they also provide habitat for wildlife, improve the physical and mental health outcomes for local communities, and increase property values. In this overview,

Do you want to increase tree canopy and cool your city? Citygreen has worldwide expertise in planting methods that growing trees faster then traditional planting methods

Book a free 1-hour design workshop for you and your team with our urban greening consultants.

Our consultants will:

• Understand your current tree canopy challenges
• Bring clarity around the best urban planting methods
• How to integrate green blue infrastructure into your city

Top Benefits of Planting Urban Trees

The benefits of planting trees in urban areas are numerous and far-reaching. Trees help to improve air quality by absorbing pollutants such as nitrogen dioxide, sulfur dioxide, and fine particulate matter. They also help to sequester carbon, which is important for mitigating the effects of climate change.

Additionally, trees help to reduce the urban heat island effect, which occurs when cities are significantly warmer than surrounding rural areas due to the heat absorbed and reflected by buildings, pavement, and hardscaped surfaces. Trees combat the heat by providing shade and evapotranspiration, which helps to cool urban areas and reduce the amount of energy required for air conditioning.

Urban trees help increase biodiversity and support local ecosystems, providing habitat for wildlife, including birds, insects, small mammals, and clean the surrounding soil and air of pollutants and particulates. This is especially important in urban areas, where natural green space is often limited and runoff from hardscaped surfaces, infrastructure and cars has detrimental effects to the community.

How to Grow Better Urban Trees

Hear from Ross Clark, the man who wrote the standard on growing trees in Australia. Ross Clark recently spoke at our event ‘Where the Shade hits the Pavement’ on how to grow better urban trees.

Identifying Suitable Areas for Planting Trees in Urban Areas

Identifying suitable planting locations is an important step in planting more trees in urban areas. Areas that lack greenery and could benefit from more trees include parks, sidewalks, residential areas, and public spaces.

For example, Penrith City Council in Australia identified suitable areas to plant urban trees by using heat sensor data, topography mapping and community survey data to review where the most vulnerable in their community lived to determine areas where additional tree canopy cover would be most beneficial and prioritized planting in those locations.

You can review Penrith City Councils full ‘Cooling the City Strategy’  from our Where Shade Hits The Pavement Event here:

How to Choose a location for Urban Trees?

When choosing planting locations, it is important to consider factors such as accessibility, sunlight, and available soil volume and quality. Trees should be planted in areas that are easily accessible for maintenance and receive adequate sunlight, water and soil volume.

Soil volume and quality is absolutely crucial to the success and longevity of urban trees, as trees require well-draining soil that is rich in nutrients and uncompacted to provide space for root growth and oxygen and water the chance to peculate deep into the soil.

In urban areas where soil volume and space is a concern, Citygreen’s leading range of structural soil vault systems are designed to provide adequate growing medium for tree roots, infrastructure protection, and provide additional green blue stormwater management properties (WSUD) all within one system.

Download our Stratavault Reference Manual to learn why soil cells are essential for urban trees.

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Selecting the Right Tree Species for Urban Areas

Selecting the right tree species is crucial for the success of tree planting initiatives in urban areas. Trees that are well-suited to urban environments should be selected, such as those that can tolerate & filter pollution, withstand drought, provide tree canopy and environmental and aesthetic design.

Native tree species that are adapted to the local climate should be prioritized, as they are more likely to thrive and support local wildlife. For example, the Greening Australia initiative in Australia, planted over 500,000 trees, shrubs, and grasses in urban areas using native species. 

Related: Best Tree for Reducing Air Pollution.

When selecting tree species, it is important to consider the size of the tree at maturity, as some species may be too large for urban areas and cause damage to the tree, buildings and infrastructure.

There is nothing more disheartening than witnessing a tree’s canopy hacked to accommodate utilities like powerlines due to poor planning. In such instances, both the tree and the community suffer, missing out on the invaluable benefits of a mature tree in the environment.

Moreover, the mismanagement of trees results in wastage of ratepayers’ money, as maintenance workers must continually tend to the space surrounding the infrastructure for the total lifecycle of the tree.

Factor to Consider	Examples
Tolerance to pollution	London Plane Tree, Eastern Red Cedar, Ginkgo, Honey Locust
Drought tolerance	Hackberry, American Elm, White Oak, Redbud
Soil compaction tolerance	Red Maple, White Pine, Black Cherry, Bald Cypress
Mature size	Japanese Maple, Crape Myrtle, Dogwood, Serviceberry

Planning the Urban Tree Planting Process

Best Time to Plant a Tree

Planning the tree planting process involves several important steps. The ideal time to plant a tree is during autumn after trees lose their leaves or early spring before budbreak.

We ideally plant during autumn as tree root growth goes into overdrive, instead of the tree splitting its energy between root growth and canopy growth the tree focuses on expanding it’s fine and structural roots as far as possible when canopy growth is much less of a concern.

The further the fine and structural roots grow and establish, the better the outcomes the tree canopy will experience during the following canopy growth period.

What Soil Should you use for Urban Trees

The type of soil you use and soil preparation is also important to the success of trees in urban areas, as trees require well-draining uncompacted soil that is rich in nutrients.

Proper irrigation is necessary to ensure that newly planted trees receive enough water to establish healthy root systems. At Citygreen we can provide customised soil designed specifically for the trees environment.

Related Article: How Quality Soil Grows Healthy City Trees

Citygreen invited landscape architect Elke Haege Thorvaldson, co-author of the acclaimed ‘Soils for Landscape Development‘ to speak at ‘Where the Shade Hits the Pavement’ about how to design and specify soils for trees in urban locations.

Proper Urban Tree Planting Techniques 

When planting the tree, ensure it is positioned at the proper height and the root crown is at ground level, and the hole is dug to the correct depth to avoid oxygen deprivation that hinders root development.

Confirm the tree stands straight by using a tree anchor and having someone view it from multiple angles before backfilling the hole gently yet firmly, stabilizing the root ball’s base with packed soil. Eliminate air pockets by watering periodically during backfilling.

Only stake the tree if necessary, as studies show that unstaked trees establish faster and develop stronger trunks and roots. Mulch the tree’s base with organic matter to retain moisture, moderate soil temperature, and reduce weed competition.

Newly planted trees in urban areas need additional care during their initial establishment phase. Addition follow-up care is needed in the weeks after such as keeping the soil moist but not waterlogged, watering trees at least once a week, and more frequently during hot and windy weather.

Water must be concentrated on the rootball at the base of the tree as a newly-planted tree can only access moisture that is within reach of it’s roots. We recommend installing a Snorkil system around a newly planted tree to help water & oxygen access the deeper roots. The Snorkil also helps avoid roots trying to surface in search of nutrients as the deeper roots have access to a deeper source of food.

See the tools Citygreen use to enable urban tree planting.

To better understand how to set realistic targets for planting urban trees watch Gwilym Griffiths from  Good Canopy Company talk at Where Shade Hits the Pavement.

Engaging the Community in the Tree Planting Process

Community engagement is an important aspect of tree planting initiatives in urban areas. Involving the community in these initiatives can help to increase awareness and support for environmental conservation efforts.

Ways to encourage community participation include hosting public events, working with local organizations, and providing educational resources on the benefits of trees and how to care for them. Community members can also be involved in the selection of tree species and planting locations. 

Reach out to your city council and see if they offer a free tree planting program.

Maintaining Planted Trees in Urban Areas

Proper maintenance is crucial for the health and longevity of planted trees in urban areas. Regular watering is necessary to ensure that trees receive enough moisture, especially during hot and dry periods. Pruning is important to remove dead or damaged branches and promote healthy growth.

Monitoring for pests and diseases is also important, as urban environments can be conducive to the spread of these issues. It is important to address any issues early to prevent them from spreading and causing damage to the trees.

Monitoring the Impact of Urban Tree Planting on the Environment

What gets measured gets improved. Measuring the impact of tree planting initiatives in your community is crucial. This involves monitoring the reduction of air pollution, the increase in biodiversity and health of the tree, heat measurements, property values, and increased community activity.

By tracking progress, you can determine the monetary and environmental value these trees bring to the community.

Related Article: Soil Vaults Deliver Huge ROI in Quantifiable Results

Overcoming Challenges in Planting More Trees in Urban Areas

There are several challenges to planting more trees in urban areas, such as lack of space and limited funding or initiative by developers, council . However, there are solutions to these challenges:

City Mandated Tree Plantings for new Constructions: New Constructions and developments must include a minimum number of trees in their designs to ensure that any new constructions are adding environmental value to the community to help combat climate change, and the urban heat island effect.

City Mandated Soil Volumes: Soil Volume is critical to the success of urban trees so city standards must include a minimum soil volume that is adequate for trees to survive once they reach maturity. 

Maintenance Programs: Ensuring the continued care and maintenance of newly planted trees is vital for their survival and growth. However, a challenge arises with tree ownership, responsibility, and care, particularly when dealing with project-based constructions focused on swift project completion and tight deadlines.

It is crucial to establish maintenance programs during the initial contract process. By doing so, we can guarantee that the development and success of the trees are not overlooked or disregarded after the initial planting phase. 

Case Study: Stratavault Empowering Tree Planting in Tamworth CBD

Tamworth CBD’s bustling Peel Street serves as a central hub, attracting visitors from distant towns and farmers for work and leisure. During the renowned week-long ‘Toyota Country Music Festival,’ Peel Street transforms into a lively pedestrian thoroughfare with bustling markets and with performance stages and buskers up and down the street.

Recognizing the potential to breathe new life into the adjacent Fitzroy Street, the Tamworth Regional Council embarked on a comprehensive revitalization project in December 2017.

This transformation aimed to integrate the underutilized street seamlessly into the CBD, invigorating the street for residents and local businesses by adapting the street into a walkable pedestrian street with inviting spaces for people to gather, including the addition of trees planted in Stratavault for shade, street furniture with misting, and captivating ‘living umbrellas.’

Read the Full Case Study

Conclusion

Planting trees in urban areas is crucial for environmental conservation and improving the quality of life for city residents. By identifying suitable planting locations, selecting the right tree species, planning the planting process, engaging the community, and maintaining planted trees, we can increase green space in urban areas and reap the numerous benefits trees provide. 

The team at Citygreen is available to take your questions to help you deliver higher quality urban trees. Contact us.

At Citygreen, we believe that trees can help to alleviate the impacts of climate change, but first, we need to get them in the ground, so they thrive in our communities.

Planting trees in our bustling cities is no easy feat. The idea that you can plant a tree into a sidewalk or verge and hope that it will survive on its own during these erratic weather seasons we now face is an idea that has now been conclusively abandoned.

So what tree management options are available to ensure trees in urban settings have the best chance to grow into productive life long assets?

At Citygreen, we believe that planting trees using an adequately designed root management system is a small cost compared to the time and labour needed to replant trees and landscapes after premature death or removal due to infrastructure damage.

What is a Root Director?

Root Director is a circular root management device designed to prevent root swirl and divert root growth downward and outward away from surround urban infrastructure such as roads, and pavements. The root director sit over the trees rootball and encourages controlled root growth, which enhances the tree’s growth and overall longevity and stability.

Why you should use a Root Director for your next Tree

This innovative solution provides numerous benefits that support optimal tree growth and overall tree well-being. Here’s why you need a root director for your trees:

Enhanced Root Guidance:

A root director directs the growth of tree roots downwards directly from the root ball, guiding them away from potential obstacles such as utilities, sidewalks, or structures. This ensures that roots can expand freely in a controlled manner, reducing the risk of damage to infrastructure and promoting healthy root development.

Improved Nutrient and Water Uptake:

By directing the roots towards nutrient-rich soil and water sources, a root director optimizes the absorption of essential nutrients and moisture by the tree. This results in improved tree health, increased resistance to stressors, and enhanced overall growth.

Prevents Root Circling and Girdling:

Without proper guidance, tree roots may start circling or girdling around the tree’s own trunk, leading to restricted water and nutrient flow and eventually compromising the tree’s stability and health. A root director prevents such issues by redirecting the roots outward, promoting a strong and well-structured root system..
Related: How to Manage Tree Roots

Preserves Landscape Design:

In urban and landscaped areas, maintaining the intended design and aesthetic appeal is crucial. A root director allows trees to grow in a more controlled manner, preserving the desired landscape design while ensuring the trees’ long-term health and structural integrity.

Long-Term Tree Care:

Incorporating a root director as part of your tree care strategy promotes proactive and sustainable tree management. It helps minimize the need for root pruning or disruptive maintenance practices in the future, saving time, effort, and costs associated with tree care.

Investing in a root director is a proactive measure that supports the vitality and longevity of your trees. By guiding root growth and providing essential benefits, it’s a valuable tool for maintaining healthy, robust trees that contribute to the beauty and sustainability of your landscape.

Deeper and healthier root growth means the trees can access more subsoil moisture during dry periods. During wet periods, the roots have a greater and deeper span to find available oxygen in waterlogged soils.

Also, if tree roots are not directed downwards, they will grow horizontally and cause issues to other infrastructures like pipes and sidewalks.

Related: How Tree Roots Behave.

For more information download the free digital brochure below.
RootDirector Brochure. 

Citygreen Projects is driven by a clear set of values, a passion for exceptional project outcomes and an enduring commitment to innovation.

What we Bring to your Urban Revitalisation Project:

• Concepts and modelling
• Budgeting and feasibility
• Technical design and drafting
• Documentation and contract admin
• Project management and scheduling
• Construction and quality control
• Commissioning and maintenance

What is Citygreen Projects?

Citygreen Projects is your multi-disciplinary project partner to assist you in urban revitalisation projects through all phases, from conceptual modelling, budgeting, and community engagement right through to design, documentation and then final delivery of construction works.

We work together, blending our expertise and knowledge across urban planning, urban design, and landscape architecture to meet your needs and aspirations. Our advice, services and solutions are well-considered and balanced. We respond decisively to every job and every challenge, ready to help realise a successful outcome that is workable, sustainable, and achievable. We pride ourselves on integrity and commitment and believe in explaining the realities of every situation.

What Services do Citygreen Projects offer?

Citygreen Project’s role is the creation of sustainable places for people that enrich community life, provide joyful, memorable, and worthwhile experiences, and serve the natural environment.

Citygreen Projects works closely with Citygreen’s DesignStudio, a dedicated and experienced group of design professionals providing services in master planning, plans of management, design for public domain, parks and open spaces, strategy and policy for recreation, open space and public domain, and planning and design for multi-residential developments and estates.

Our process is multidisciplinary, tapping into the extensive experience and insight of experts across our practice. We take an inclusive approach, involving clients at all stages of a project to ensure their needs are met, providing education and insight wherever needed.

Who does Citygreen Projects work with?

We work with clients (particularly LGA’s) throughout Australia and New Zealand, balancing commitment, creativity, and innovation with award-winning experience. Creating great cities and places to live and work requires an ability to respond to urban and regional development complexity. Our collaborative approach integrates multiple stakeholders and complex interrelationships.

Our services extend across private and public sectors and all scales of projects, from master-planned communities to intimate and engaging interior spaces. Citygreen’s DesignStudio, a team of architects, designers, planners, engineers and environmental scientists, share the technical knowledge and the latest digital tools and resources to bring imaginative thinking to solve clients’ challenges.

Why should I use Citygreen Projects to manage my next Urban Renewal Project?

Citygreen assists you in undertaking urban landscape projects from start to finish, so you don’t have to spend the time budgeting & managing multiple contractors. At Citygreen, we have been researching and developing best practise methodologies internationally for decades to help plan, plant and maintain trees in the city and create green space in urban environments.

Citygreen Projects understands how towns, cities, and region’s function. Our aim is to work with you to make them even better, streamlining the planning and design process to ultimately deliver successful, compelling solutions.

I have a vision for an urban development project, what are the next steps?

Book a free online workshop to learn more about Citygreen Projects. This interactive workshop covers everything from creating large healthy tree canopies faster and more predictably to how to integrate living green wall systems, to incorporating stormwater management and increase the liveability and sustainability of our cities for generations to come, based on case studies, industry research, structural and civil engineering considerations.

Book Your Online Workshop

Everybody knows that good soil quality is the foundation for tree growth!

However, not all soils are the same, and that can have a significant impact on the trees growing from it.

Cultivating the right kind of soil will ensure trees will live and thrive, even in urban locations where there is less room for them to survive.

That’s why it’s so important to take note on what’s happening below ground, if you want to enjoy the beauty and shade of the greenery above.

Let’s take a closer look at soil and its importance for healthy tree growth.

What Makes Up Good Soil Quality?

Soil is composed mainly of elements like water, minerals, nutrients and gases.

Different types of soil vary according to texture, colour, depth, acidity, fertility and ability to hold water. Because each tree species has different needs, it’s crucial to know what kind of soil they require to grow – if you want the best results.

To help familiarise yourself with the varieties of soil, here are the most common types of soils you need to remember:

• Chalky – a stony type of soil that can be found on top of limestone or bedrock
• Clay – a tightly packed soil that is often lumpy and sticky when wet
• Sandy – dry and loose soil base that has a rough texture
• Silt – smooth, slippery kind of soil that is composed of fine particles
• Peaty – contains a great amount of organic matter due to its acidic nature
• Loamy – the best soil for planting, as it’s full of nutrients and can hold water well

Why is Loamy Soil the Best?

Loamy soil stands out as an optimal choice for trees due to its unique blend of qualities that foster robust growth. Its balanced composition—a blend of sand, silt, and clay—provides an uncompacted environment for tree roots. Loamy soil offers excellent drainage, preventing waterlogging that can drown roots, while retaining enough moisture to sustain trees during dry spells. Moreover, loamy soil is rich in essential nutrients, supporting healthy tree development by efficiently absorbing and storing vital minerals. Its texture facilitates superior aeration, preventing compaction and enabling roots to spread easily, reducing the amount of energy the tree needs to use to push new root growth through the soil ensuring strong anchorage and encouraging healthy root systems. The versatility of loamy soil accommodates a wide variety of tree species, making it an excellent choice for nurturing flourishing trees.

However, while loamy soil is generally advantageous for tree growth, different tree species may have specific soil preferences. Factors like climate conditions, sunlight exposure, and adequate care significantly impact a tree’s health and growth.

At Citygreen we do on-site soil analysis for any new plantings and can offer you soil specifically designed for the tree and site location. This ensures that the tree is planted in the best possible circumstances to kickstart canopy growth.

Why is Soil Quality Important for Tree Health?

The soil you use can either nurture or restrain your trees’ growth because soil performs a lot of essential functions. Here are the five reasons why soil is important for trees:

Soil provides a foundation for tree growth.

Soil serves as the anchor that holds trees firmly in place. It provides structural stability, preventing them from toppling over in adverse weather conditions. The composition and texture of the soil determine how well it can support a tree’s weight and ensure it remains upright throughout its life.

Soil stores the necessary amount of water for trees.

Soil acts as a reservoir for water, which is crucial for a tree’s survival and growth. It stores rainwater and moisture, making it available to tree roots during dry periods. This stored water ensures that trees can continue photosynthesis and nutrient uptake even when external water sources are scarce.

Soil Hosts Biodiversity.

Soil is a vibrant ecosystem teeming with life. It provides habitat for various organisms, from earthworms to beneficial microorganisms. This biodiversity is essential for soil health and indirectly benefits trees by enhancing nutrient cycling, improving soil structure, and promoting overall soil vitality.

Soil supports the trees’ roots in accessing nutrients and minerals.

The root system of a tree relies on the soil to access essential nutrients and minerals. These nutrients are found in the soil in various forms, and the tree’s roots play a vital role in absorbing and transporting them to different parts of the tree. Adequate soil composition is crucial to ensure that trees receive the nutrients they need to grow and thrive.

Soil filters out the pollutants that can harm trees.

Soil serves as a natural filter, removing harmful pollutants from water before it reaches a tree’s root system. Pollutants, such as heavy metals or chemicals, can be detrimental to trees if they enter their vascular system. The soil acts as a protective barrier, purifying water and ensuring that only clean, nutrient-rich water is available to the tree’s roots.

In urban locations where healthy soil is not abundant or tightly compacted to ensure stability for urban infrastructure, it’s important to ensure that trees are planted with the appropriate soil structure to compensate – often called the “architecture of the soil.”

Having the right soil architecture guarantees that there is proper arrangement of soil particles (including silt, sand and clay that aggregate together). It also involves measuring the correct pore spaces between each tree, which enables their roots to propagate without causing any structural pavement damage.

When these two considerations are overlooked, trees will struggle to grow in city and suburban locations, leading to replacement and maintenance costs, unsightly spaces and poor shade quality for the community.

Citygreen understands this challenge.

That’s why we deliver innovative urban landscape solutions like Soil Vault Systems. Our very own Stratavault© and Stratacell© tree products facilitate healthy root growth for your trees while making sure they won’t cause any damage to your city’s infrastructure.

To find out more about these products, head to https://citygreen.com/product-category/soil-structure-systems/.

While people are supposed to drink about eight glasses of water a day, a tree in Ohio with a 10’ canopy can require as much as 100 gallons a day!

There are a couple of crucial considerations you need to take when it comes to water your trees. Insufficient water can lead to poor outcomes, including killing the tree. Too much water without sufficient aeration and drainage can have the same result.

A quick, easy way to test is to use a screwdriver to get about 2 – 3 inches down into the soil. If that soil feels moist to the touch, it’s exactly how it should be. If it’s dry, then it’s time to water.

Watering a young tree (<25 years old) is a matter of watering the roots around the trunk. You don’t want to flood the tree trunk, nor do you want to water outside the root ball.

Older trees (>25 years or a trunk over 12” in diameter) require deep watering completed occasionally. You’re looking at about 10 gallons per 1” of trunk diameter per week during dry conditions.

So how do you get that water to your trees, without standing around with a hose all day?

There is a range of solutions, from slow-release water bags, bubbler hoses, and overhead irrigation systems, through to a 5-gallon bucket with holes drilled in the base.

Citygreen has shown exceptional outcomes with the healthy and fast growth of trees by combining soil vault systems, such as Stratavault, with perforated flexible piping systems around the root ball, for example, the Snorkil products.

By creating space for adequate aeration with the Stratavault, you can limit excessive soil compression, and the perforated pipes provide airflow and enable water to be piped directly into the roots.

Combining systems like these in urban areas with permeable pavements, and connecting roof water systems to tree pits helps harvest stormwater, better managing both tree watering needs and stormwater management. To find out more about watering and aerating tree pits to improve growth outcomes, head to https://citygreen.com/product-category/tree-pit-irrigation-and-aeration/