As droughts, heat waves, and global temperatures increase, many trees are experiencing heat stress, which occurs when a tree loses water faster than it can replenish. It is important to be able to identify if your tree is suffering from heat stress so that you can prevent it from harming your tree any further! Common symptoms of heat stress include:
Withering leaves
Abnormal yellowing of leaves
Rust-colored spots on leaves
Dropping leaves and branches
If you notice that your tree is suffering from heat stress, here are a few things you can do:
Water Your Tree:
Keeping your trees hydrated is a great way to help them avoid heat stress. Water your tree about 2-4 times a week (depending on heat), but be careful not to overwater as that can lead to tree failure. Make sure to pour the water as far out as the tree canopy goes, as that is how far the roots go. If possible, try to avoid using sprinklers to water your tree as they will not get the water deep enough to the roots.
Add Mulch:
Applying mulch around the tree can protect its roots during heat waves and keep the soil moist. Start by removing all grass within a 3-foot radius of the tree, and then add the mulch in a donut-like ring around the trunk. Make sure the mulch does not touch the tree trunk as that will cause the tree to suffocate.
Conduct Proper Maintenance:
The pressure trees experience from heat stress is already damaging, so ensuring your trees are well maintained keeps from adding even more to that pressure. Looking out for pests, disease, or any forms of tree damage are great ways to do this! If possible, consider having a professional look at your trees to make sure they are healthy.
Use Shade Cloths:
While this method is typically used for smaller trees, using shade cloths or screens is a great way to shield younger and newly planted trees from the heat. Many nurseries sell shade cloths!
Trees are key parts of our ecosystem and it is important that we care for and protect them!
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