Posted by Scott Hackett on Thu, Jun 16, 2011 @ 2:55 AM
Trees need space, they need soil volume – there is a direct correlation between what we provide the tree with to grow below ground and with the result we will see above ground.
Architects and engineers would never seriously consider building a structure with inadequate foundations and yet many will routinely plant trees on their schemes in tiny tree pits just a fraction of what they really need to do well.
Where possible, plant trees in groups with shared soil space. Trees can then spread out happily between themselves and benefit from additional soil volume. One common method is the use of continuous trench planting and this is a very good way of providing adequate volume.