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Manual control uses hands or hand tools to control weeds.
All parts of the plant need to be removed as it can regrow from the rhizomes.
Mechanical control suits larger infestations, using power tools and machinery to reduce the bulk of the problem. Follow up removal or other control may be required.
Before using any herbicide always read the label carefully and ensure that the chemical is registered for use on the target weed. All herbicides must be applied strictly in accordance with the directions on the label.
Nymphaea mexicana - Queensland Government