Snakes in Central Florida: Venomous vs. Harmless and First Aid

Keeping Them Out of the Yard, and What to Do After a Bite

Snakes are part of living in Central Florida. They turn up on lanais, in garages, in pool skimmers, and in flower beds, especially in spring when they become more active. Most of them are harmless, and many eat the rodents homeowners would rather not have. Knowing which few to watch for, and what to do when one shows up, takes most of the worry out of it.

Short version: Florida has about 50 native snake species, and six are venomous. Four of those live in Central Florida: the cottonmouth, eastern diamondback rattlesnake, pygmy rattlesnake, and coral snake. The copperhead and timber rattlesnake live only in North Florida and the Panhandle. Most snakes in Central Florida yards are harmless, like black racers, rat snakes, and water snakes. Leave any snake alone and give it several feet of space. Snakes bite mainly when they’re handled or stepped on. To keep them away, cut down on cover and rodents, and seal gaps around the house. Commercial snake repellents don’t work. After a venomous bite, call 911 and Poison Control at 1-800-222-1222. Don’t use a tourniquet, ice, cutting, or suction.

Florida’s venomous snakes

Five of Florida’s six venomous snakes are pit vipers. Pit vipers have a heat-sensing pit between each eye and nostril, vertical cat-like pupils, a thick, blocky head, rough-looking keeled scales, and a heavy body. UF/IFAS cautions that these features are hard to see from a safe distance. A triangular head alone doesn’t prove a snake is venomous, because some harmless snakes flatten their heads when threatened. The coral snake is the exception: it’s slender, brightly banded, and isn’t a pit viper.

Snake	In Central Florida?	Typical adult size	How to recognize it	Where you’d see it
Pygmy rattlesnake	Yes, statewide	12 to 24 inches	Gray with dark blotches and a reddish-brown stripe down the back; rattle too small to hear	Flatwoods, scrub, and residential yards; UF/IFAS calls it Florida’s most commonly encountered venomous snake
Cottonmouth (water moccasin)	Yes, statewide	30 to 48 inches	Heavy, dark body, often nearly black; dark band through the eye; opens its mouth to show a white lining	Edges of lakes, ponds, canals, ditches, and wetlands
Eastern diamondback rattlesnake	Yes, statewide	33 to 72 inches	Dark diamonds with cream borders; light-bordered dark stripe through the eye; rattle, though some don’t rattle before striking	Pinelands, scrub, and golf courses; sometimes suburbs next to pine woods
Coral snake	Yes, statewide	20 to 30 inches	Slender, with red, yellow, and black rings; black snout; red rings touch yellow rings	Underground, under brush piles, firewood, and leaf litter; seldom seen
Timber rattlesnake	No, North Florida only	Up to 5 feet or more	Pinkish-gray to tan with dark bands, a reddish stripe down the back, and a black tail	About 12 northern counties
Copperhead	No, Panhandle only	Usually under 3 feet	Light brown to gray with hourglass-shaped darker bands	Western Panhandle and along the Apalachicola River

Click a name for the Florida Museum of Natural History (University of Florida) page with photos and range maps. Sizes are from those pages and UF/IFAS.

For the coral snake, UF/IFAS teaches the rule “yellow, red, STOP!” If the red and yellow rings touch, it’s a coral snake. The rule applies only to North American coral snakes. Coral snake bites are rare, and nearly all of them happen when someone picks the snake up.

Harmless snakes that get mistaken for venomous ones

Most snakes found around Central Florida homes are nonvenomous. The ones most often mistaken for something dangerous:

Water snakes: Large, dark, and common around ponds and ditches, so they’re often taken for cottonmouths. Water snakes have round pupils and no facial pit, and you can see their eyes from directly above. They’re harmless but can bite hard if handled.
Scarlet kingsnake and scarlet snake: Red, black, and yellow (or white) like a coral snake, but the red rings touch only black rings, and the snout is red, not black.
Black racer: Long, slender, glossy black with a white chin, and very fast. It’s one of the most common yard snakes and often suns on lawns and fences. Young racers are gray with reddish blotches.
Rat snakes and corn snakes: Good climbers that turn up on shrubs, fences, and garages, and sometimes indoors. They follow rodents, so seeing them often points to a rodent problem.
Eastern indigo snake: A very large, glossy blue-black snake, often with a reddish chin. It’s harmless and protected by law.

To identify a snake, photograph it from a distance with zoom and compare it with the Florida Museum’s snake ID guide, or use an app such as iNaturalist. If you aren’t sure what it is, treat it as venomous.

Keeping snakes away from the house

Snakes come for food and shelter. FWC notes that frequent sightings around a house often point to a rodent problem. UF/IFAS recommends:

Cut back cover: Keep grass mowed and shrubs trimmed away from the house. Keep brush piles and debris away from the house and play areas, stack firewood on a rack rather than the ground, and keep rock walls away from the house unless their cracks are mortared.
Control rodents: Clean up spilled birdseed and pet food. Store food, pet food, and seed in sealed containers, and cut down on clutter and cardboard boxes in the garage. UF/IFAS suggests traps over poison, which can harm pets and wildlife. See rats, squirrels, and raccoons.
Seal the house: Some snakes fit through a pencil-sized gap. Add door sweeps and garage threshold seals. Caulk gaps where pipes and wires enter, and cover vents and larger openings with hardware cloth. Check pool enclosure screens and drains. Seal or remove pet doors, which are a common way in.
Skip the repellents: UF/IFAS says commercial snake repellents don’t work.
Fence as a last resort: For repeated venomous snake problems next to woods or wetlands, UF/IFAS describes a barrier of aluminum flashing, 1/4-inch hardware cloth, or silt fence. It should be about 2 to 3 feet high and buried about 6 inches deep. Turn the ends outward, put the posts on the yard side, and keep vegetation trimmed away from it. It takes upkeep and won’t stop every species.

Watch where you step and reach, especially around stumps, woodpiles, and burrows. Wear closed-toe shoes in natural areas, and keep dogs leashed and children back from lake and pond edges.

A snake in the yard, pool, or house

FWC’s advice is to stand back and let the snake go. Snakes move around, and one in the yard today is often gone tomorrow. Never handle a venomous or unidentified snake. UF/IFAS suggests these methods for a snake you’ve identified as harmless:

Outdoors: From a distance, spray it gently with a garden hose to move it along.
In the pool: Lift it out with a long-handled leaf skimmer.
In the garage: Close the door to the house and open the outside doors so it can leave.
Indoors: Keep children and pets away. Most snakes found inside Florida homes are harmless. Use a broom to guide the snake into a large trash can, secure the lid, and release it in a nearby natural area.

Avoid glue traps, which are inhumane and usually mean handling the snake. If removal isn’t safe, or the snake may be venomous, photograph it and call a nuisance wildlife trapper. FWC keeps a voluntary list of trappers. FWC also says there’s no good reason to kill a snake unless a venomous one poses an immediate danger to people or pets. Most bites happen when someone handles a snake or accidentally steps on one.

If someone is bitten

Treat any bite from a snake that might be venomous as an emergency, even if there’s little pain or swelling at first. UF/IFAS’s snakebite action plan:

Call 911, then Poison Control at 1-800-222-1222. Tell Poison Control which hospital the person is going to so a toxicologist can contact the ER.
Move away from the snake. Don’t try to catch or kill it, and don’t delay care to identify it.
Keep a bitten arm or leg still and below heart level.
Take off rings, watches, bracelets, and tight clothing near the bite before swelling starts.
Wash the bite with soap and water, keep the person warm and calm, and note the time of the bite and any symptoms for the medical team.

Don’t use a tourniquet, ice, or heat. Don’t cut the wound or try to suck out venom, and don’t give alcohol or stimulants. Don’t wait for symptoms before getting care.

A bitten pet needs a veterinarian right away. Even pygmy rattlesnake bites, generally not life-threatening, can be more serious for children and small pets.

Buying a home next to woods, a retention pond, or a lake? Expect more wildlife, and look at the screen enclosure, door seals, and attic openings during the inspection. See the home inspection checklist. The rest of this pest series: palmetto bugs, roaches, and spiders, fire ants and mosquitoes, and rats, squirrels, and raccoons.

Frequently Asked Questions

Four: the pygmy rattlesnake, cottonmouth, eastern diamondback rattlesnake, and coral snake. Florida has six venomous species in all, but the copperhead and timber rattlesnake live only in North Florida and the Panhandle.

UF/IFAS calls the pygmy rattlesnake the most commonly encountered venomous snake in Florida. It’s small, usually 12 to 24 inches, and its rattle is too quiet to hear, so watch where you step and reach in yards and landscaping.

Cottonmouths have vertical pupils, a heat-sensing pit between the eye and nostril, and a heavy body, and you can’t see their eyes from directly above. Water snakes have round pupils and no pit. These features are hard to see safely, so keep your distance from any dark snake near water.

No. UF/IFAS says commercial snake repellents don’t work. Removing cover and rodents, sealing gaps around the house, and, for serious problems, a buried barrier fence are what help.

Move away from the snake, call 911 and Poison Control at 1-800-222-1222, keep the limb still and below heart level, and remove rings and tight clothing. Don’t use a tourniquet or ice, cut the wound, or try to suck out venom.

FWC says there’s no good reason to kill a snake unless a venomous one poses an immediate danger to people or pets. Some species, such as the eastern indigo snake, are protected by law. Most snakes leave on their own, and a nuisance wildlife trapper can remove one that won’t.

Sources

This article is for general informational purposes only and isn’t financial, legal, insurance, or tax advice – for guidance specific to your situation, talk to a licensed professional.

Snakes in Central Florida: Telling Venomous from Harmless