Is the Summer Heat Stressing Out Your Trees? Here’s What to Watch For
Nashville summers are no joke. With temperatures regularly climbing into the 90s and humidity that makes it feel even hotter, people aren’t the only ones feeling the strain — your trees are too. At Mid-TN Tree, we see the effects of summer heat stress on trees throughout the Nashville and Goodlettsville areas every year, and the good news is that catching the signs early can make all the difference.
What Is Heat Stress, and Why Does It Happen?
Trees manage heat and drought much like we do — by trying to stay hydrated. When the summer sun is intense and rainfall is scarce, trees struggle to pull enough water up through their roots to keep their leaves functioning properly. The result is a tree that starts shutting down non-essential processes just to survive. Left unaddressed, that survival mode can weaken a tree significantly, making it vulnerable to pests, disease, and long-term decline.
Signs Your Tree Is Struggling
Knowing what to look for is half the battle. Some of the most common signs of heat stress in the Nashville and Goodlettsville area include:
- Wilting or curling leaves — Leaves that droop, curl inward, or feel crispy are often a tree’s way of reducing water loss.
- Leaf scorch — Brown, burned-looking edges on leaves, especially on the outer canopy, are a classic sign of heat and drought stress.
- Early leaf drop — If your tree is dropping leaves in July or August, it’s not fall — it’s a warning sign.
- Yellowing foliage — Chlorosis, or yellowing between the leaf veins, can indicate the tree isn’t able to absorb enough nutrients due to drought conditions.
- Cracks or splits in the bark — Extreme heat can cause bark to dry out and crack, leaving the tree exposed to insects and infection.
Newly Planted Trees Need Extra Attention
If you’ve planted a new tree in the last year or two, pay close attention this summer. Newly planted trees haven’t had time to establish deep root systems, which means they’re far more vulnerable to heat and water stress than mature trees. A young tree can go from thriving to severely stressed in just a week or two without adequate water. Deep, slow watering two to three times per week — rather than light, frequent watering — encourages roots to grow downward and become more resilient over time.
Which Trees Are Most at Risk in Middle Tennessee?
While no tree is completely immune to summer stress, some species handle Nashville’s heat and humidity better than others. Native and adapted trees like bald cypress, eastern red cedar, and river birch tend to be more resilient. On the other hand, Japanese maples, dogwoods, and newly introduced ornamental species often need extra care during the hottest months.
When to Call a Professional
If you’re noticing multiple signs of stress on your trees this summer, don’t wait to see if they bounce back on their own. The team at Mid-TN Tree serves homeowners across Nashville and Goodlettsville, and we’re here to help assess your trees’ health, recommend a treatment plan, and protect your landscape investment before the damage becomes permanent.
Give us a call today — your trees will thank you.
