Robinia pseudoacacia L.

Sp.Pl. 722 (1753)
Conservation Code
Not threatened
Naturalised Status
Alien to Western Australia
Name Status

Tree, to 15 m high, with spiny stems & branches. Fl. white, Sep to Dec. Grey sandy clay, red-browm loam, granite. Along creeklines, valley edges, disturbed land.

Amanda Spooner, Descriptive Catalogue, 22 August 2007


IBRA Regions
Avon Wheatbelt, Jarrah Forest, Swan Coastal Plain, Warren.
IBRA Subregions
Katanning, Northern Jarrah Forest, Perth, Southern Jarrah Forest, Warren.
Local Government Areas (LGAs)
Augusta Margaret River, Boyup Brook, Bridgetown-Greenbushes, Denmark, Gosnells, Katanning, Manjimup, Mundaring, Narrogin, Victoria Park.

Management Notes (for the Swan NRM Region)

General Biology. Growth form. Tree. Reproduction. Root suckers. Time to first flowering. 6+ years. Toxicity. Inner bark, root sprouts and wilted leaves are toxic to humans and livestock. Vegetative regeneration strategy. Resprouts, produces root suckers. Woody structure. Ring porous. Fire response. Can resprout vigorously following fire.

Notes. Intolerant of shade. Increases available soil nitrogen facilitating invasion of other weeds.

Additional information. Origin. Eastern North America. History of use/introduction. Garden escape.

Suggested method of management and control. Hand pull seedlings. Basal bark older plants using 250 ml Access® in 15 L of diesel to base 50 cm of trunk in spring-summer. Read the manufacturers' labels and material safety data sheets before using herbicides. For further information consult the Australian Pesticides and Veterinary Medicines Authority to determine the status of permits for your situation or state.

Management Calendar

Calendar Type Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Comments
Flowering               O Y Y Y O  
Optimum Treatment Y Y O         O Y Y Y Y  

Legend: Y = Yes, regularly, O = Occasionally, U = Uncertain, referred by others but not confirmed.



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