Willow rhus (Searsia lancea)

Also known as: karee, African sumac



Willow rhus is a low branching tree up to 12 m tall, with long, thin, leathery leaves, small greenish-yellow flowers and yellow-to-greyish or brown fruit. It is from southern Africa. It has been found in far western New South Wales where it is outcompeting native plants. It is also known to pose problems for septic systems, having an extensive root system. Willow rhus grows from seeds and can sucker from the roots. It is both drought and frost resistant.


Goch D and von Hörchner C (2016), Alien tree species contributing to demise of native flora in Sunset Strip, ABC NEWS

PlantNET, Royal Botanic Gardens and Domain Trust, Sydney, plantnet.rbgsyd.nsw.gov.au 

Stern M (2008), Searsia lancea In PlantZAfrica 


back to top


Herbicide options

Contact your local council weeds officer for control advice for Willow rhus (Searsia lancea).

back to top

Biosecurity duty

The content provided here is for information purposes only and is taken from the Biosecurity Act 2015 and its subordinate legislation, and the Regional Strategic Weed Management Plans (published by each Local Land Services region in NSW). It describes the state and regional priorities for weeds in New South Wales, Australia.

Area Duty
All of NSW General Biosecurity Duty
All plants are regulated with a general biosecurity duty to prevent, eliminate or minimise any biosecurity risk they may pose. Any person who deals with any plant, who knows (or ought to know) of any biosecurity risk, has a duty to ensure the risk is prevented, eliminated or minimised, so far as is reasonably practicable.
Western Regional Recommended Measure*
Land managers should mitigate the risk of new weeds being introduced to their land. The plant should be eradicated from the land and the land kept free of the plant. The plant should not be bought, sold, grown, carried or released into the environment. Notify local control authority if found.
*To see the Regional Strategic Weeds Management Plans containing demonstrated outcomes that fulfill the general biosecurity duty for this weed click here

back to top

Reviewed 2017