Scientific name: Hygrophila costata
Description
- Erect, emergent herb up to about 1 metre tall, growing around fresh water lake edges
- Coarse, opposite leaves with prominent veins and midrib
- Papery, white flower whorls in the axils of the leaves; turn brown upon maturity
- Spreading stems sprout new roots from the nodes when in contact with soil.
- The native Hygrophila angustifolia, which is locally significant, has purple flowers.
Weed status - restricted matter category 3
Includes weeds, pest animals and noxious fish such as gambusia, dingoes and yellow crazy ants.
You must not distribute this restricted matter.
Deliberate distribution or disposal contrary to the legislation may allow this matter to spread.
Due to its potential to cause serious economic, environmental or social harm, these weeds are regulated by Council.
We have an annual inspection program for properties in Logan.
Council has the authority to issue a Biosecurity Order to properties with category three restricted matter.
Control method
Foliar Spray
Herbicide is diluted with water at a specific rate, and sprayed over the foliage to point of runoff.
Most suited to shrubs, grasses and dense vines less than six metres tall.
Manual and Mechanical Removal
Manual control uses hands or hand tools to control weeds.
This can be an effective control as it can minimize soil disturbance and can instantly remove the entire weed.
Mechanical control suits larger infestations, using power tools and machinery to reduce the bulk of the problem.
Mechanical control can include slashing, mowing, dozing, harvesting, and felling.
Herbicide warning
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.
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