How To Reduce Heat Stress On Trees

Heat stress happens when a tree loses more moisture through its leaves than it can absorb through its roots. In other words, it’s dehydrated and overheated. Prolonged exposure to high temperatures, drought conditions, or poor soil quality can push trees past their limits.

While many native species are fairly resilient, urban and suburban trees face additional stressors from compacted soil, reflective heat from pavement, and limited root space. All of these make trees more susceptible to summer heat.

Signs of Heat-Stressed Trees

If your parched tree could talk, it would probably say, “I’m thirsty!” Here’s how it tries to show you instead:

• Wilting or curling leaves
• Leaves turning yellow or brown, especially around the edges
• Leaf drop during midsummer (well before autumn)
• Slow or stunted growth
• Bark splitting or cracking from sun exposure

In severe cases, heat stress can weaken the tree to the point where it becomes more vulnerable to pests, disease, and structural failure. In such cases, there might be a need to schedule a tree removal instead.

How to Protect Your Trees from Heat Stress

The good news is most trees can handle summer just fine - with a little proactive care on your part. Here are some effective ways to reduce the risk of heat stress and keep your trees looking (and feeling) their best.

• Water Deeply and Consistently: Many property owners water their trees daily, but only give them a sip. When watering trees, it's more about depth. Deep watering allows moisture to reach the roots where the tree needs it most. Rather than watering daily, aim for a slow and deep soak once or twice a week. Use a soaker hose or drip irrigation system for best results.
• Mulch Like a Pro: A 2- to 4-inch layer of organic mulch around the base of your tree can work wonders. Mulch helps retain soil moisture, regulate root temperature, and reduce weed competition. Just be sure to leave a few inches of space around the trunk to prevent moisture buildup on the bark.
• Prune Wisely: While a well-pruned tree is healthier and more resistant to stress, excessive pruning can actually increase vulnerability. If you’re not sure which limbs to trim or when to do it, it’s wise to consult a professional. The team at Driscoll can assess your tree’s health and provide targeted care.
• Watch for Pests and Disease: Heat-stressed trees are like a welcome mat for insects and fungi. Call Driscoll or any professional tree company if you notice signs like oozing sap, boreholes in bark, or clusters of discolored leaves.

When it comes to summer tree maintenance, experience matters. If you'd like to leave the tree service to trained and experienced professionals, then consider the time-tested ones at Driscoll Tree Service. With a cumulative decades of industry experience, we know what it takes to give your trees a real spa treatment.

Call Driscoll Tree Service Anytime

Worried about your trees? Call or message Driscoll Tree Service to get in touch with a member of our team. Let us know what you're worried about so we can arrange an appropriate appointment or urgent dispatch.