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Common Tree Diseases in Coastal Georgia

Published February 27, 2026

Savannah's coastal climate is great for moss and seafood. It's tough on trees. Salt air, humidity, and sandy soil create conditions you won't find 50 miles inland.

If your trees look sick, here's what might be happening.

Live Oak Decline

Live oaks are Savannah icons. When one starts dying, homeowners panic. The good news is that slow decline is often manageable if you catch it early.

Look for leaves turning yellow in summer when they should be dark green. Dieback starting at branch tips is another sign. If you're on Wilmington Island or near the marshes, your oaks face more stress from salt and water table fluctuations.

Root rot is common in poorly drained soil. Savannah's heavy clay subsoil holds water. If your oak sits in a low spot that puddles after rain, the roots can't breathe. Over time, they rot.

Fungal infections also attack stressed oaks. You might see mushrooms growing at the base or dark streaks in the bark. These require an arborist's assessment. Some infections can be managed. Others mean removal is the safest option.

The Spanish Moss Myth

Spanish moss does not kill trees. Let's clear that up right now.

Moss is an air plant. It takes nothing from the tree except a place to hang. If your tree is dying and covered in moss, the moss didn't cause it. The tree was already declining, and moss grows thicker on sick trees because there's more light getting through the thinning canopy.

Heavy moss can add weight to weak branches. If a limb is already dead or cracked, moss makes it more likely to fall. But healthy branches handle moss just fine.

If you want moss removed for aesthetics, that's fine. But don't expect it to save a dying tree. Address the real problem instead.

Salt Spray Damage

Live near Tybee or the Wilmington Island beaches? Salt spray burns leaves and kills buds. You'll see browning on the windward side of trees, especially after storms push saltwater inland.

Pines are especially vulnerable. Their needles turn brown and don't recover. Repeated salt exposure weakens the whole tree and makes it susceptible to beetles and fungus.

Oaks handle salt better but still suffer. If you're within a mile of the coast, choose salt-tolerant species for new plantings. Existing trees need regular inspection to catch decline early.

Hypoxylon Canker on Oaks

See white or brown crusty patches on oak bark? That's likely hypoxylon canker. It's a fungus that attacks stressed oaks, especially after drought or storm damage.

There's no cure. Once the fungus is visible, the tree is dying. The question is how fast and whether it poses a risk to structures or people.

Infected trees become brittle. Branches snap without warning. If you have a large oak with hypoxylon near your home on Victory Drive or anywhere in the historic district, get it assessed immediately. Removal might be necessary before it fails.

Pine Bark Beetles

If your pine is oozing sap, turning brown, or losing bark, beetles might be boring in. They attack stressed trees first but spread fast to healthy ones nearby.

Pine beetles killed thousands of trees in Georgia over the last decade. Once they're in, the tree is done. Remove it quickly so beetles don't jump to your neighbor's pines.

You'll see small holes in the bark and sawdust around the base. Don't wait to confirm. Assume beetles and act fast.

When to Call an Arborist

If you see sudden leaf loss, major dieback, or fungus growth, call Chase. He'll identify the problem and tell you if treatment is possible or removal is the safer call.

Coastal Georgia is tough on trees. Regular inspection helps you catch problems while you still have options.

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