New Trees: Recent Introductions to Cultivation by John Grimshaw, Ross Bayton and illustrated by Hazel Wilks. Amazon
Two Tree-Planting Pitfalls to Avoid
12.07.2023 - 18:25 / finegardening.com
You’ve probably heard the old saying that the best time to plant a tree is 20 years ago, and the second best time is now. If you’ve recently been inspired to add a new tree to your landscape, there are a few steps you can take to get your new acquisition off to a great start.
Trees have very specific preferences in regard to planting depth. When a tree germinates in an undisturbed natural setting, it is generally able to establish a root system that spreads out near the soil’s surface, providing the growing tree with water, nutrients, and proper structural support. But all too often trees are planted too deeply in garden settings, compromising their health and structural integrity.
Whether a tree is grown in a pot or grown in a field to be balled and burlaped upon harvest, the root flare or buttress flare of the tree is commonly buried several inches or more below the soil surface. The root flare refers to the lower portion of the trunk where the first structural roots emerge from the tree. These first structural roots must be at the surface or a few inches below the natural grade of the soil. When the root flare is properly placed, the structural roots are able to provide ideal support for the aboveground portions of the tree, helping it to withstand wind and snow loads.
Roots also need to breathe and undergo gaseous exchanges to survive. Most of a tree’s root system develops within the top 18 inches of the soil, which is what allows these exchanges to occur. Most of the nutrients a tree needs for proper health are also found close to the soil’s surface. If roots are buried too deeply, a tree’s overall health will be greatly compromised.
To avoid these problems, our first line of defense is to purchase properly grown
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