Environmental Weeds in Sydney North

• Noxious Weeds
• Other Significant Environmental Weeds
• Weed Alerts

Weed control

• Hand removal techniques
• Biocontrol

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Watsonia

Botanical Name: Watsonia bulbillifera
Family: IRIDACEAE  

Photo: Ku-ring-gai Council


 

Description:
 Native to South Africa, Watsonia is an erect herb to 2m high with globular corms. Invades roadsides, hind-dunes and bushlands. Dies back in late summer.

Leaves basal, linear up to 60cm high

Red to salmon pink, trumpet shaped, flowering in spring.

4 - 10 bulbils are formed on lower spike.Plants which develop from bulbils to not flower ih the first year but form a corm which produces flowers in the second or third year. One to three 4-8cm corms are produced above and beside the old corm during the growing season.

Dispersal:
Water and dumping.

Impact on Bushland:
Found in moist places. Serious problem in Perth and on the Mornington Peninsula in Victoria. Locally abundant on road sides.

Control:

Manual: All corms need to be dug up and all bulbils removed.
Chemical: Please contact your local control authority for advice on chemical control.

Similar Species:

Suggested Alternatives:

References:
TAFE NSW