Disease Guide — Tallahassee & Big Bend, FL
If a redbay in your yard turned brown all at once this year — whole branches of leaves dead but still hanging, like the tree was flash-frozen — you’re looking at laurel wilt. The disease, carried by an invasive ambrosia beetle smaller than a grain of rice, has killed redbays by the hundreds of millions across the Southeast since arriving through the Port of Savannah in the early 2000s, and it has been working through Leon, Wakulla, and Jefferson counties’ bay trees for years. There’s no cure for an infected tree. Here’s how to recognize it, what to do with a dead bay near your house, and the firewood rule that actually slows the spread.
What kills redbay trees in Tallahassee?
Laurel wilt — a fungal disease (Harringtonia lauricola) vectored by the invasive redbay ambrosia beetle. It blocks the tree’s water transport and kills redbay and swamp bay in weeks. Infected trees can’t be saved; dead bays near structures need removal before the brittle-wood stage, with the wood kept on site.
If a browned-out bay stands within falling distance of your home, call (858) 319-0022 to reach the licensed local arborist you’re matched with — dead redbays degrade faster than most homeowners expect.
How do you recognize laurel wilt?
The signature is speed. A redbay that was green in April shows wilted, reddish-brown leaves across whole limbs by June — and the dead leaves hang on for months instead of dropping, which is the tell that separates wilt from drought stress. Peel a patch of bark on a symptomatic limb and you’ll find the second signature: blue-black streaking in the sapwood, the fungus in the plumbing. Third: tiny beetle entry holes, sometimes with toothpick-like sawdust tubes pushing out of the bark. The disease hits the laurel family — in our area that’s redbay and swamp bay first and worst, sassafras next, and the ornamental camphor tree occasionally. It does not touch oaks, pines, magnolias, or the “bay-named” trees that aren’t laurels (loblolly bay, sweetbay magnolia) — misidentification panic is common, and half the wilt calls in town turn out to be something else. When in doubt, the disease ID service settles it.
What should you do with an infected tree?
- Accept the loss early — there is no practical cure; fungicide injections exist for high-value specimens but must be applied before infection and re-applied for life, which pencils out for almost no yard tree.
- Remove dead bays near targets promptly — redbay wood decays fast; within a year or two a dead bay is too brittle to climb and sheds limbs in ordinary wind. See dead tree removal.
- Leave far-from-target snags standing — a dead bay in the back woods is woodpecker habitat, not a hazard; removal is a targets question, not a tidiness one.
- Keep the wood on site — this is the one that matters for the region: moving infested bay firewood is how the beetle jumps counties. Chip it, burn it on site where lawful, or let it rot where it fell.
- Don’t replant bays in the same spot — beetles linger in the area; choose a non-laurel replacement from the replanting guide.
Why this matters beyond your yard
Redbay isn’t just ornamental — it’s the host plant for the Palamedes swallowtail, the big butterfly of the Big Bend’s swamps, and its berries feed songbirds through winter. The Apalachicola and St. Marks lowlands held some of the densest redbay stands anywhere, which is why the wilt’s march through Wakulla and Jefferson counties has been so visible along the coastal highways. Homeowners can’t stop the beetle, but the firewood rule — don’t move bay wood, ever — is the one lever that slows new outbreaks around uninfested pockets.
What does removal involve, and what does it cost?
Yard redbays are mid-sized trees — usually 20 to 50 feet — so removals are quicker and cheaper than the oak and pine jobs that dominate this site, provided they happen while the wood still holds. The brittle-wood surcharge is real: a fresh-dead bay is a routine climb-or-lift job, while a two-years-dead one needs everything rigged from adjacent trees or a lift because the trunk can’t be trusted. Stumps are modest grinds. The usual drivers — access, targets, haul-vs-chip — are covered in the removal cost guide; the on-site quote comes in writing from the pro you’re matched with. If other bays on the lot are still green, ask for a walkthrough while the crew is there — catching the next infection early buys scheduling time.
Laurel wilt FAQs
My redbay browned in one season. Could it be anything else?
Sudden whole-branch browning with leaves that hang on is laurel wilt until proven otherwise in this region. Drought stress browns gradually and drops leaves; wilt flash-kills. The bark-peel check for blue-black streaking confirms it.
Can my infected tree infect my oaks or magnolias?
No — laurel wilt only affects the laurel family: redbay, swamp bay, sassafras, and relatives. Oaks, pines, magnolias, and fruit trees are not hosts.
Is there any treatment worth trying?
For a landmark specimen, preventive fungicide injection before infection can protect a tree, re-treated indefinitely — a commitment that makes sense for almost no ordinary yard bay. Once symptoms show, no treatment saves the tree.
Can I use the dead bay for firewood?
On your own property, yes — burn it where it grew. What spreads the disease is transporting bay wood to new areas; the beetles ride the logs. Chip it or burn it on site, never haul it to camp.
What should I plant to replace a lost redbay?
For similar evergreen screening: sweetbay magnolia (not a laurel, despite the name), yaupon holly, or American holly. For the butterflies’ sake there’s no substitute — which is the disease’s real cost.
Serving Tallahassee, Leon, Wakulla, Jefferson, and Gadsden counties. Content reviewed August 2026. Tallahassee Tree Service connects homeowners with independent licensed tree professionals and does not perform tree work directly.
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