Earleaf Acacia
About this species.
Earleaf Acacia (Acacia auriculiformis) is a Florida Category I invasive — a fast-growing weedy tree that aggressively colonizes disturbed land across South and Central Florida. State-prohibited from planting. If you have it, removal is recommended both as best-practice land stewardship and to prevent it from seeding into nearby natural areas. In Southwest Florida the consequence is regulatory: the City of Sanibel names earleaf acacia as one of 8 species property owners are required to remove, and Sarasota County exempts invasive species from tree-removal permits (Code § 54-585) — no permit application, no mitigation planting, no county review window.
Identification
- Distinctive sickle-curved or boomerang-curved evergreen 'phyllodes' — modified flattened leaf-like petioles, NOT true compound leaves. They look like long curved single leaves but are botanically something different.
- Phyllodes 4–8 inches long, pale gray-green to dark green.
- Smooth gray-brown bark with shallow fissures.
- Slim slightly leaning trunk.
- Open spindly crown.
- Hanging clusters of cream-yellow 2–3 inch cylindrical bottle-brush spike flowers.
- Twisted curly brown seed pods like little ear-rings hanging from branches (the 'earleaf' reference and the diagnostic feature).
- 30–60 ft typical mature.
Florida regulatory status — Southwest Florida
- Florida Invasive Species Council (FISC, formerly FLEPPC) Category I. The FISC list is advisory statewide — it becomes enforceable where a county or city adopts it by reference.
- City of Sanibel: earleaf acacia is one of 8 regulated species property owners are required to remove, alongside the mandatory Brazilian pepper eradication program adopted in 1996 covering all zoning districts.
- Sarasota County: exempt from tree-removal permits as an invasive species (Code § 54-585). The exemption is why an invasive removal schedules faster and prices lower than a protected-tree removal of the same size.
- Lee County: invasive species are generally exempt from tree-removal permits (Ord. 98-28).
- Charlotte County: invasive removal is required during construction (§ 3-9-100(f)(16)).
- Manatee County: generally exempt from removal permits unless the tree is part of required landscaping or the clearing covers 1 acre or more.
Why it's a problem
- Listed Category I invasive by the Florida Exotic Pest Plant Council.
- Prohibited from planting, sale, or transport under state law.
- Aggressive seeder — bird-dispersed seeds spread the invasion across long distances.
- Allelopathic — releases compounds through fallen leaves that suppress nearby plant growth.
- Brittle wood — frequent storm-damage failures.
- Forms dense monoculture stands that displace natives.
Removal
If you have Earleaf Acacia on your property, removal is the recommended action. Like other Florida invasives, proper removal includes cut + cambium herbicide treatment (the species resprouts aggressively from cut stumps), proper disposal (not chipping into landscape mulch — seeds survive), and follow-up sweeps for new seedlings from the soil seed bank. In most of Southwest Florida no removal permit is involved, so the schedule is set by crew availability rather than a county review window. Photos of the tree plus a rough stem count are usually enough to produce a written estimate for a specific address.
What to know.
- Listed as a Category I invasive by the Florida Exotic Pest Plant Council — actively displaces native species.
- Cuttings cannot be composted or burned in residential yards. Specialized disposal required.
- Lower wind-resistance score — particularly vulnerable in hurricane-force winds. Pre-storm inspection recommended.
Frequently asked.
Do I need a permit to remove an earleaf acacia in Florida?
Generally no, in Southwest Florida. Sarasota County exempts invasive species from tree-removal permits (Code § 54-585) and Lee County treats invasives as generally exempt (Ord. 98-28). The City of Sanibel goes further and requires removal — earleaf acacia is one of 8 species property owners must clear. Charlotte County requires invasive removal during construction (§ 3-9-100(f)(16)). City rules can differ from county rules, so the specific address determines the answer.
Why is it called 'earleaf' acacia?
The seed pods. They're twisted, curly, brown, and hang from the branches looking like small ears or earrings — hence the common name. Combined with the sickle-curved phyllodes, the ear-pods are the easiest single ID feature for Earleaf Acacia.
Can I just cut it down myself?
You can — but without proper stump treatment it'll resprout from the stump within months. And without proper disposal, the seeds spread. Effective Earleaf Acacia removal requires the cut-and-treat approach plus proper disposal of all cuttings.
What can I plant instead?
Florida natives that fill similar functional roles: gumbo limbo (in zone 10+), live oak, southern magnolia, sabal palm. For fast-growing screening, native wax myrtle (Myrica cerifera) is a good substitute. Avoid the temptation to plant other non-native fast-growers; many of them turn out to be invasive too.
Services for earleaf acacias.
The work we do on earleaf acacias most often. Each card links straight to the service detail.