Iguana-Resistant Plant Lists for South Florida Commercial Jobs
Iguana-Resistant Plant Lists for South Florida Commercial Jobs
Green iguanas (Iguana iguana) are an invasive species established throughout South Florida since the 1960s. By 2019, the Florida Fish and Wildlife Conservation Commission (FWC) estimated their impact on South Florida landscaping at more than $30 million annually in plant damage, burrow damage to sea walls, and property destruction. In Miami-Dade and Broward counties, particularly along coastal and canal-adjacent corridors, iguana pressure is severe enough to make plant selection a primary factor in landscape project success.
Contractors who specify iguana-resistant plants from the start avoid costly warranty callbacks and gain a reputation for installs that actually hold up.
Why Iguanas Avoid Certain Plants
Iguanas are herbivores with preferences that field observation has made reasonably predictable. They avoid plants for several reasons:
Toxic compounds: Plants in the families Euphorbiaceae (milkweeds, crown-of-thorns), Apocynaceae (oleander, plumeria), and Solanaceae contain alkaloids, glycosides, or latex compounds that are irritating or toxic to iguanas. Field observations consistently show these plants undamaged in otherwise heavily browsed landscapes.
Tough texture: Plants with thick, waxy, or leathery leaves are less palatable than tender, succulent foliage. Cycads, bromeliads, and palms are generally left alone.
Strong scent: Some aromatic herbs and plants with volatile oils (rosemary, society garlic, lantana) are avoided, possibly due to olfactory deterrence.
Spiny or rough surfaces: Bougainvillea, agave, and thorny shrubs are avoided both because of physical deterrence and because thorns slow access to feeding areas.
Iguana-Resistant Plant Reference for South Florida Landscaping
Iguana-Resistant and Iguana-Preferred Plants — South Florida Commercial Landscaping Reference 2025
| Plant | Scientific Name | Iguana Resistance | Use in Landscape |
|---|---|---|---|
| Bougainvillea | Bougainvillea spp. | High | Fence coverage, accent; thorns deter iguanas effectively |
| Croton | Codiaeum variegatum | High | Color accent, hedges; latex sap deters browsing |
| Oleander | Nerium oleander | High | Screen hedge; all parts toxic to iguanas and humans — use with caution near children |
| Lantana | Lantana camara | High | Ground cover, borders; FLEPPC Category I — verify before HOA use |
| Agave | Agave spp. | High | Accent planting; spines provide physical deterrence |
| Society garlic | Tulbaghia violacea | High | Border planting, ground cover |
| Cocoplum | Chrysobalanus icaco | Moderate | Native hedge; generally avoided but may be browsed lightly |
| Native palms (most) | Sabal palmetto, Thrinax spp. | Moderate | Structural; palm fronds and trunks generally undamaged |
| Ixora | Ixora coccinea | Low | Very commonly browsed; avoid as primary ground cover in iguana zones |
| Pentas | Pentas lanceolata | Avoid | Highly preferred; completely destroyed in iguana-heavy areas |
| Hibiscus | Hibiscus rosa-sinensis | Avoid | Iguana favorite. Installs will be browsed to bare stems in active iguana zones |
| Roses | Rosa spp. | Avoid | Heavily preferred despite thorns. Not viable in high-iguana-pressure areas |
Resistance is not absolute — hungry iguanas and young iguanas (juvenile, under 12 inches) may sample resistant plants. No South Florida planting is completely iguana-proof in areas with high population density. Resistance ratings reflect average field performance across Miami-Dade, Broward, and Palm Beach. Source: UF/IFAS; FWC; FloridaLandscapeIQ field observations, 2025.
Contractor Best Practices for High-Iguana-Pressure Sites
Identify iguana pressure before bidding. Canal-adjacent properties, waterfront communities, and sites within 0.5 miles of saltwater are at substantially higher risk. Visit the site in the morning to look for iguana activity before finalizing the plant list.
Discuss iguana risk with clients before planting. A landscape that uses iguana-preferred plants in a high-pressure area will fail and generate warranty calls. Building client expectations into the proposal conversation protects both parties.
Use resistant species as the structural layer. Cocoplum hedges, bougainvillea accents, agave focal points, and native palms give the landscape form and structure without iguana loss. Use susceptible species only in elevated planters or protected interior courtyard settings where iguana access is limited.
FWC iguana removal: Florida law allows landowners to kill iguanas on their property humanely without a permit, and licensed trappers can be contracted for active removal programs. For commercial HOA properties, a quarterly trapping program combined with resistant plant selection is the most effective long-term strategy.
Find licensed landscape contractors familiar with iguana-resistant plant selection throughout South Florida through the FloridaLandscapeIQ Contractor Directory.
Source: UF/IFAS Green Iguana in Florida; Florida Fish and Wildlife Conservation Commission; FloridaLandscapeIQ field observations, South Florida, 2025.