Florida’s Poisonous Native Plants: Know Them on Sight

Know them so you never need this page in a hurry

Florida grows some of the most beautiful plants in North America — and a handful of the most dangerous. This guide covers every Florida native plant with serious documented toxicity: what it looks like, which parts are dangerous, what happens on exposure, and what to do about it.

Let’s get the most important thing out of the way first, because it matters more than anything else on this page:

There are no vaccines for plant poisoning, and there are no home cures. That’s not us being cautious — it’s medical reality. Treatment for plant poisoning is decontamination and supportive care delivered by professionals. If you suspect someone has been poisoned by a plant, call Poison Control at 1-800-222-1222 or call 911 immediately. Don’t wait for symptoms to appear. Don’t induce vomiting. Don’t Google home remedies. Make the call.

How to use this guide

Every plant below is native to Florida — these aren’t exotic imports, they’re plants you can genuinely encounter on a hike, in a park, or at the edge of your own yard. Each entry is tagged by danger level:

• 🔴 Extreme — potentially fatal. Manchineel territory. Know these on sight.
• 🟠 High — serious poisoning risk if eaten or mishandled.
• 🟡 Moderate — painful, sickening, or rash-inducing, but rarely life-threatening.

Use the search to look up a plant by name, or filter by danger level. The identification notes will help you recognize each one — but they’re for recognition, not self-diagnosis. When in doubt about an exposure, the answer is always the same: call Poison Control.

A note for parents, pet owners, and the merely curious

Kids put things in their mouths. Dogs eat things they shouldn’t. That’s not a character flaw, it’s biology. The practical move isn’t fear — it’s familiarity. Walk your yard with this guide once, learn which of these (if any) grow near you, and teach kids the only plant rule that matters: don’t eat wild plants unless a trusted adult says so. For pets, the ASPCA’s poison database is the companion reference worth bookmarking alongside this page.

Why a native-plant nursery talks about poisonous plants

Because “native” doesn’t mean “harmless,” and pretending otherwise would be dishonest. Coontie is a gorgeous native cycad and every part of it is toxic raw. Coral bean has some of the prettiest red flowers in Florida and seeds you should never handle carelessly. Knowing both halves of the story is what makes you a real gardener instead of just a plant collector. Respect the plant, give it its space, and it’ll give you zero problems.

Keep Growing 🌱

Where to go next:

• Living Soil for Florida Gardens
• I Have a Vegetable Garden. Now What?
• Compost vs worm castings