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.
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.
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.
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.
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.