Photo by Melody

PlantFiles: Earleaf Acacia, Ear-pod Wattle, Papuan Wattle, Auri, Northern Black Wattle
Acacia auriculiformis

Family: Mimosaceae
Genus: Acacia (a-KAY-see-uh) (Info)
Species: auriculiformis

2 members have or want this plant for trade.


20-30 ft. (6-9 m)
30-40 ft. (9-12 m)

Unknown - Tell us

USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)
USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Full Sun
Sun to Partial Shade
Light Shade
Partial to Full Shade

Unknown - Tell us

Bloom Color:
Bright Yellow

Bloom Time:
Unknown - Tell us


Other details:
May be a noxious weed or invasive

Soil pH requirements:
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)

Patent Information:
Unknown - Tell us

Propagation Methods:
From seed; sow indoors before last frost

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds

Click thumbnail
to view:

Thumbnail #1 of Acacia auriculiformis by TREEHUGR

Thumbnail #2 of Acacia auriculiformis by TREEHUGR

Thumbnail #3 of Acacia auriculiformis by TREEHUGR

Thumbnail #4 of Acacia auriculiformis by TREEHUGR

Thumbnail #5 of Acacia auriculiformis by TREEHUGR

By htop
Thumbnail #6 of Acacia auriculiformis by htop

By htop
Thumbnail #7 of Acacia auriculiformis by htop

There are a total of 18 photos.
Click here to view them all!


1 positive
2 neutrals
4 negatives

Gardeners' Notes:

Negative WJStickel On Jan 19, 2010, WJStickel from Cape Coral, FL wrote:

This weedy tree was planted near a utility pole by the previous owner and it is a mess now! When it was younger it looked nice, sort of like a weeping willow, but as it matured it wants to fill every possible space with its leaves and limbs. It does give great shade, but at a huge cost. It robs water from everywhere. The leaves fall year round and don't want to decompose. Lots of big grained pollen in the spring and squishy green seed pods that will dry out and harden, but never soon enough. Although I haven't seen that much seeding in the lawn, I can definately understand why it was placed on the "invasive" list by FLEPPC.

Positive tropicbreeze On Feb 14, 2009, tropicbreeze from noonamah
Australia wrote:

I have dozens of these on my place and really like them. They're pioneer plants and are a good fast growing cover for more sensitive ones, great for establishing a 'rainforest'. Their leaves make great mulch, the best pineapples I've grown were in Black Wattle leaf mulch.

I've friends who say the best Mangosteens in their orchard are those growing amongst the Black Wattles.

They can be invasive but not nearly as much as African Mahogany (Khaya senegalensis). They don't germinate in deep shade, whereas mahoganys germinate anywhere from deep shade to full sun. And they aren't the 'widow makers' that the mahoganys can be.

They can grow waterlogged for nearly half the year in the wet season. They're one of the longer lived acacias.

However, their lifespan is shorter than a lot of other trees, which can become a problem. In cyclones African Mahoganys are the first to go over, but Black Wattles follow not long later.

Neutral fauna4flora On Aug 10, 2008, fauna4flora from West Palm Beach, FL wrote:

Although a weedy tree (it spreads, but not hard to keep up with compared to other species like Brazilian pepper), one interesting botanical feature is that from a seed, this plant produces four first sets of leaves that are each shaped differently.

Neutral htop On Feb 3, 2005, htop from San Antonio, TX (Zone 8b) wrote:

I have not grown this plant. It is "(n)ative to the savannas of New Guinea, islands of the Torres Strait, and northern Australia, it has been widely introduced, e.g. in Fiji, India, Indonesia, Java, Malaysia, Niger, Nigeria, Philippines, Tanzania, Thailand, the Soloman Islands, Uganda, and Zanzibar." Source: James A. Duke. 1983. Handbook of Energy Crops. unpublished. earpod wattle is an introduced native plant in Florida and is on the invasive plant list (Category I). It is found in Maui in small populations and probably on the other Hawaiian Islands; however, eradication methods are being recommended to prevent it from naturalizing.

The wood is used for making farm tools and furniture as well as used for fuel wood.

"The plant is amazing in its ability to recolonize wastes, papermill sludge, pH ca 9.5; even uranium spoils, pH ca 3.0; the only tree found on 20-year old uranium spoil. Used for the cultivation of the lac insect in India." ... "Seeds, storable for 18 months in airtight containers, should be soaked in hot water for 24 hours. Sow in full light, allowing 6 days for germination ..." Source: James A. Duke. 1983. Handbook of Energy Crops. unpublished.

Negative arielsadmirer On Jan 30, 2005, arielsadmirer from Margate, FL (Zone 10a) wrote:

I had one in my backyard. Thank goodness it is gone!

It is one of the messiest trees around.

First, the leaves are big and don't break down easily.

Second, when in bloom, big grains of pollen fall everywhere. If you are sipping iced tea underneath it, enjoying the shade of this tree, big grains of pollen fall into your drink.

Third, it has big, gnarly seed pods. When ripening, they do make a neat crackling sound as they curl, this is one neat thing about this tree. When the pods open they spit seeds everywhere! And then THEY fall, everywhere! They are big. They hurt to walk on. They do not rake easily, either.

It is now over 2 years since the tree is gone, and I am still pulling up seedlings.

Negative TREEHUGR On Nov 5, 2004, TREEHUGR from Now in Orlando, FL (Zone 9b) wrote:

I donated some photos of this tree because it's a hard one to find any photos for online.

These are really unique looking. They are also a real pain in the habitat. Spreading quickly and crowding out native vegetation. Class I invasive.

Negative NativePlantFan9 On Aug 10, 2004, NativePlantFan9 from Boca Raton, FL (Zone 10a) wrote:

Earleaf Acacia is a plant that was once popular as a landscape plant here in South Florida but is now seriously invasive in natural habitats, sucking out water and removing valuable native vegetation. It is widespread in zones 9a, 9b, 10a, 10b, 11 and below through the Keys. Its roots are very strong and can break through concrete, ruining sidewalks and driveways and pushing out other vegetation. This plant was introduced in the early 1900s as a landscape plant in California, the Southwest United States and Texas, and Florida. The plant quickly spread into natural areas in Florida, and is common especially in my area. Many people in the Southwest, Texas, and southern California, however, still value these trees and plant them there, where they may not be as invasive as in my South Florida area. If you live anywhere in Florida, especially in South Florida, please take this into consideration, and don't be tempted by the attractive looks of this tree landscape plant!

MORE FACTS - This plant is native to southeast Asia, Indonesia, Papua New Guinia and Australia. It grows well rapidly especially in full sunlight. It can grow up to about 30 feet tall as a tree. It is listed as a Category One Invasive by the Florida Exotic Pest Plant Council (FLEPPC).


This plant has been said to grow in the following regions:

Boca Raton, Florida
Cape Coral, Florida
Fort Lauderdale, Florida
Hollywood, Florida
Kissimmee, Florida
Pompano Beach, Florida
Port Saint Lucie, Florida
West Palm Beach, Florida

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