Scientific name: Parthenium hysterophorus
Description
- Annual herb with a deep taproot growing up to two metres tall
- Growing in most soil types, particularly disturbed areas
- Erect stem that becomes woody and develops many branches with age
- Pale green leaves, deeply lobed and covered with fine soft hairs
- Small creamy white diamond shaped flowers on the tips of numerous stems.
Problem
Can cause major health problems due to the plant’s allergenic properties.
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.
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.
