Summer Heat Stress In Trees
It has been a hot summer here in Georgia. With the heat index stretching to 115 degrees, all of us are wondering how our gardens, plants and trees will survive. Heat stress in trees can open them up for pests and diseases to enter while they are in a vulnerable state, lacking the nutrients they typically have to ward them off. Having a certified arborist evaluate your trees regularly is always the best practice in preventing costly damage. They can detect pests and diseases from the start and mitigate the problem before it takes over.
…So what is heat stress?
Heat stress occurs when a tree loses water faster than it can replace it. When trees are in a continual state of transpiration, they lose more water than they can absorb through their roots. This is especially concerning in times of drought when there isn’t enough water available for the tree to absorb.
Below are some signs and symptoms of heat stress in your trees as well as some tips on how to avoid it.
Signs of heat stress:
Leaf drop
Wilting leaves
Yellowing leaves
Lack of new growth
Brown spots or bumps on leaves
Leaf scorch
Sap loss from the trunk
How to protect your trees from heat stress:
Tree trimming is usually only recommended during the dormant season, however, if you have dead, dying or diseased branches in your trees, it is important to have them removed as soon as possible. This will reduce the amount of energy your trees have to provide to “repair” the dead branches.
Watering is a given. Whether your trees are young or mature, during periods of drought and high heat it is important to thoroughly water your trees using a drip irrigation system or soaker hose. Keeping the hose away from the trunk and focusing on the roots will help to prevent root rot. Trees under 2 years old will need more water than older trees.
If your trees are browning, or show signs of disease, contact your local certified arborist to have an evaluation by clicking the link below!
