Clockweed (Oenothera curtiflora)

Clockweed is an annual garden plant. It has become an invasive environmental weed in some locations.


How does this weed affect you?

Clockweed is a garden escape that has become an invasive environmental weed in a few locations particularly along roadsides, creeks and waterways. 

What does it look like?

Clockweed is an annual herb growing to one metre high with white flowers that become reddish or yellow with age.

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Herbicide options

Contact your local council weeds officer for control advice for Clockweed (Oenothera curtiflora).

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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

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Reviewed 2017