Plantae > Tracheophyta > Magnoliopsida > Fabales > Fabaceae > Acacia > Acacia mearnsii

Acacia mearnsii (Black wattle; Australian acacia)

Language: Afrikaans; German; Portuguese; zulu

Wikipedia Abstract

Acacia mearnsii is a fast-growing, extremely invasive leguminous tree native to Australia. Common names for it include black wattle, Acácia-negra (Portuguese), Australian acacia, Australische Akazie (German), Swartwattel (Afrikaans), Uwatela (Zulu). This plant is now known as one of the worst invasive species in the world.
View Wikipedia Record: Acacia mearnsii

Invasive Species

Acacia mearnsii is a fast growing leguminous (nitrogen fixing) tree. Native to Australia, it is often used as a commercial source of tannin or a source of fire wood for local communities. It threatens native habitats by competing with indigenous vegetation, replacing grass communities, reducing native biodiversity and increasing water loss from riparian zones.
View ISSG Record: Acacia mearnsii


Height [1]  26 feet (7.8 m)
Width [1]  24 feet (7.3 m)
Air Quality Improvement [1]  Medium
Allergen Potential [1]  High
Carbon Capture [1]  Low
Shade Percentage [1]  80 %
Temperature Reduction [1]  Low
Wind Reduction [1]  High
Hardiness Zone Minimum [1]  USDA Zone: 9 Low Temperature: 20 F° (-6.7 C°) → 30 F° (-1.1 C°)
Hardiness Zone Maximum [1]  USDA Zone: 11 Low Temperature: 40 F° (4.4 C°) → 50 F° (10 C°)
Water Use [1]  Low
Janka Hardness [3]  1660 lbf (753 kgf) Medium
Leaf Type [2]  Evergreen
Lifespan [4]  Perennial
Specific Gravity [5]  0.66
Structure [2]  Tree


Acizzia acaciaedecurrentis[6]
Agrilus hypoleucus[7]
Akainothrips herbae <Unverified Name>[7]
Ancepaspis anomala[8]
Ausejanus albisignatus[6]
Ausejanus meridionalis[6]
Ausejanus vividus[6]
Callocephalon fimbriatum (Gang-gang Cockatoo)[9]
Ceroplastes confluens[8]
Charaxes sempronius <Unverified Name>[7]
Coptomma variegatum[10]
Didymus erroneus[10]
Dryocora howitti <Unverified Name>[10]
Eurema hecabe (Common grass yellow)[6]
Garyus altus[10]
Hadrobregmus australiensis <Unverified Name>[10]
Hemiberlesia rapax (greedy scale)[11]
Hypochrysops delicia[7]
Hypochrysops ignitus <Unverified Name>[7]
Jalmenus evagoras (Imperial blue)[7]
Jalmenus icilius (Icilius Blue)[7]
Jalmenus ictinus <Unverified Name>[7]
Ledaspis mashonae[8]
Maconellicoccus australiensis[8]
Melanococcus albizziae (Wattle mealybug)[8]
Mictis profana (Crusader bug)[6]
Nacaduba biocellata[7]
Omoeacalles crisioides[10]
Paedaretus hispidus[10]
Platycercus elegans (Crimson Rosella)[9]
Polyozus galbanus[6]
Prionophus reticularis <Unverified Name>[10]
Pseudalmenus chlorinda (Silky Hairstreak)[7]
Pseudaulacaspis pentagona (mulberry scale)[11]
Sejanus brittoni[6]
Shapius brouni <Unverified Name>[10]
Tanychilus sophorae <Unverified Name>[10]
Xylotoles laetus[10]

Institutions (Zoos, etc.)

Institution Infraspecies / Breed 
Svalbard Global Seed Vault


Argentina (introduced); Australia (native); Bolivia (introduced); Brazil (introduced); China (introduced); Congo (introduced); Corsica (introduced); Ecuador (introduced); Ethiopia (introduced); Hawaii (introduced); India (introduced); Italy-F.E. (introduced); Jamaica (introduced); Japan (introduced); Kenya (introduced); Madagascar (introduced); Malawi (introduced); Morocco (introduced); Nepal (introduced); New Zealand(North) (introduced); New Zealand(South) (introduced); Pakistan (introduced); Papua New Guinea (native); Portugal (introduced); Reunion (introduced); Rwanda (introduced); Ryukyu Is (introduced); Seychelles (introduced); South Africa (introduced); Spain-F.E. (introduced); Sri Lanka (introduced); Sudan (introduced); Swaziland (introduced); Taiwan (introduced); Tanzania (introduced); Tasmania (native); Uganda (introduced); United States (introduced); Zambia (introduced); Zimbabwe (introduced);



Attributes / relations provided by
1i-Tree Species v. 4.0, developed by the USDA Forest Service's Northern Research Station and SUNY-ESF using the Horticopia, Inc. plant database.
2Kattge, J. et al. (2011b) TRY - a global database of plant traits Global Change Biology 17:2905-2935
3Wood Janka Hardness Scale/Chart J W Morlan's Unique Wood Gifts
4USDA Plants Database, U. S. Department of Agriculture
5Chave J, Coomes D, Jansen S, Lewis SL, Swenson NG, Zanne AE (2009) Towards a worldwide wood economics spectrum. Ecology Letters 12: 351-366. Zanne AE, Lopez-Gonzalez G, Coomes DA, Ilic J, Jansen S, Lewis SL, Miller RB, Swenson NG, Wiemann MC, Chave J (2009) Data from: Towards a worldwide wood economics spectrum. Dryad Digital Repository.
6Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
7Species Interactions of Australia Database, Atlas of Living Australia, Version ala-csv-2012-11-19
8Ben-Dov, Y., Miller, D.R. & Gibson, G.A.P. ScaleNet 4 November 2009
9Food of some birds in eastern New South Wales: additions to Barker & Vestjens. Emu 93(3): 195–199
10New Zealand Institute for Plant & Food Research Plant-SyNZ™ database
11Biological Records Centre Database of Insects and their Food Plants
Images provided by Wikimedia Commons licensed under a Creative Commons License
Abstract provided by DBpedia licensed under a Creative Commons License
Weather provided by NOAA METAR Data Access