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Common Tree Problems in Nashville, TN
What stressed and declining trees look like in Middle Tennessee yards — and when to ask for help.
By Tree Giants · Reviewed and updated
Quick answer
What are common signs of tree disease or decline in Nashville?
The most common signs we see in Nashville yards: thinning canopies, large dead limbs scattered through the crown, unusual leaf spotting or off-season leaf drop, fungal growth at the base or root flare, structural cracks and decay, and pest activity in the bark. Storm stress can also show up as gradual decline months after the event.
Identifying what's actually going on takes a closer look. Two trees that appear similar from the street can have very different problems underneath. A certified arborist can usually tell the difference — and tell you what it means.
Thinning canopy
A canopy that's noticeably less full than it used to be — fewer leaves, more sky showing through — is one of the clearest signs of stress. The causes range from root damage and drought to disease and construction impact. The canopy is the symptom, not the diagnosis.
Dead limbs
A few dead twigs are normal on any tree. Large dead limbs scattered through the canopy, or a whole section that didn't leaf out in spring, is a meaningful signal. It also creates a hazard if those limbs are over anything people use.
Leaf spotting, discoloration, or off-season drop
Off-color leaves, spotted or curled foliage, or leaf drop well outside the normal fall window can indicate fungal disease, nutrient deficiency, or environmental stress. A sample of affected leaves sent to the UT Extension plant disease lab can sometimes confirm what's going on.
Fungal growth
Mushrooms or shelf fungi on the trunk, at the root flare, or on exposed roots often indicate internal decay. Some decay fungi are far more serious than others — a Ganoderma conk at the base of a large oak means something different than a small bracket fungus on a branch. That's an arborist call.
Cracks, cavities, and decay
Visible cracks, hollow sections, or soft wood are structural concerns first. Even on a tree that appears alive, structural decay changes what the tree can safely support. The ratio of sound outer shell to hollow interior is what matters.
Pest activity
Small round holes in the bark, fine sawdust at the base, peeling sections, or visible insects in the wood can indicate active pest pressure. Emerald ash borer, for example, can do significant damage to ash trees before the canopy shows obvious signs. Earlier detection means more options.
Delayed storm stress
Trees that took a hard hit in a previous storm — even one that looked minor at the time — can decline in the months that follow as wounds fail to seal or internal damage spreads. If you notice a change in a tree that went through a major weather event, it's worth having it looked at.
When to schedule a tree health evaluation
If two or more of these signs are present, or if anything is changing noticeably fast, schedule a tree health evaluation. That's a focused walk-around with a certified arborist who can give you an actual read on what's happening — not a guess from the ground.
Specific problems we see often in Nashville
Emerald ash borer (EAB) on ash trees
EAB has effectively rewritten Middle Tennessee's ash population. Symptoms: thinning upper canopy, D-shaped exit holes in the bark, S-shaped galleries under loose bark, and woodpecker damage as birds chase larvae. Untreated infested ash trees usually die within a few years. Some can be preserved with ongoing systemic treatment by a licensed applicator — most cannot.
Oak wilt
Oak wilt moves through root grafts between adjacent oaks and via beetles attracted to fresh pruning wounds in the warm months. That's why we don't prune oaks April through October unless we have to. Symptoms in red oaks: rapid leaf wilt from the top down, often killing the tree within a single season. White oaks decline more slowly. Suspected oak wilt is an arborist call, not a homeowner diagnosis.
Hypoxylon canker
A stress-driven decay fungus most often seen on drought-stressed or root-damaged oaks. Look for patches of bark sloughing off to expose a tan or silver-gray fungal mat underneath. By the time hypoxylon is visible, the tree is typically in serious decline. Removal is usually the safe call once the canker is well-established near major structural roots.
Anthracnose on dogwoods, sycamores, and maples
A fungal leaf disease that shows up after wet springs. Brown blotches along leaf veins, early leaf drop, and twig dieback. Often cosmetic on established sycamores and maples; more serious on dogwoods, where repeated infections can kill the tree over several seasons.
Bacterial leaf scorch
Common in pin oaks, sycamores, and elms in Middle TN. Scorched-looking leaf edges starting in late summer, progressive limb dieback over several years. No cure — management is about extending the tree's useful life and planning the eventual removal before it becomes a hazard.
What homeowners can do — and what we can't
Watering during summer drought, mulching the root zone (not against the trunk), avoiding soil compaction under the canopy, and not pruning oaks in the warm months all help. We focus on assessment, structural pruning, removal, and cleanup. For chemical treatments — systemic insecticides, fungicide applications — we refer to licensed applicators who specialize in that work. We won't sell you a treatment program we don't run.
When the call is removal, not treatment
Decline that's progressed past the point where management buys meaningful time. Structural failure from internal decay. Hazard trees over occupied space. EAB-killed ash trees that have lost canopy integrity. These are removal conversations — and the longer they wait, the more expensive and dangerous the removal becomes. A dead ash standing for two seasons is a different removal than the same tree taken down the spring it died.