Trees are a global necessity and most of us would agree that they are a necessity in our own front and
back yards. How can we take care of these long-lived organisms to ensure that our neighborhoods are
green and vibrant?
Trees are a two-part system. The above- ground system of leaves, stems & flowers, takes in carbon
dioxide from the atmosphere – along with solar energy – and creates food for the tree.
The under- ground system of roots anchors the tree and absorbs water & minerals from the soil to
sustain the tree. Damage to either system will affect the tree.
“Out of sight, Out of mind” is often the case when it comes to a tree’s root system. Understanding the
various aspects of tree health, growth and vitality can make all the difference.
In healthy trees, the root system is in the top 2 feet of soil and it spreads out well beyond the dripline of
the canopy – covering 4 -7 times the surface area of the tree’s crown.
Tree and it’s root system. |
Trees have two types of root systems. They will begin with a tap root, and as the tree develops, a lateral
fibrous root system also develops. Over time the tap root diminishes. The tree’s major roots will be in
the top twelve inches of the soil. The ‘feeder roots’ which absorb water and minerals are at the outer
edges of the root system. These roots have tiny root hairs that allow more water to be absorbed. The
tree’s roots compete with grass & other plants for nutrients and water.
Besides water, roots need air to survive. Flooding conditions can suffocate a tree. Very few trees can
survive and thrive in excessively wet soils.
Soil compaction is another condition that reduces air spaces in the soil and which will cause stunted
growth or eventual death.
This is why we recommend watering trees with a hose (rather than a lawn sprinkler system), planting
new trees in adequately large holes with added organic matter, and yearly deep root fertilizing to
aerate the soil, reduce compaction, and supply the necessary nutrients & minerals.
Tree removals are often a necessity. Tree care of the specimens in our yards will keep us – and our
planet- healthy , happy and green. As a certified Arborist it’s my job to help you with both aspects.
Enjoy your summer…… Tim Bradley
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