This week's weed is annual ragweed. It is classified as a RESTRICTED species. It is a fast-growing fern-like annual herb that invades and suppresses pasture land.
WHAT TO LOOK FOR
- Annual herb 1-2 m tall
- Leaf blades are fern-like, deeply divided with hairy undersides
- Flowers are small, clustered, greenish-yellow erect spikes
- Leaves initially grow in a rosette at plant's base
- Leaves are oppositely arranged at the base of the plant, but are alternately arranged further up the stems.
WHY IT'S BAD
- Invades and suppresses pastures
- Colonises bare areas on roadsides and creek banks
- Pollen can cause hay fever and aggravate asthma in people.
LOOKS SIMILAR TO
- Parthenium (also RESTRCITED)
WHAT TO DO
- This plant must NOT be given away, sold, or released into the environment. Penalties may apply.
- Please report any sightings of this plant to council for advice on control options.