Growth Habit: A small erect herb that emits a strong odour when brushed.
Type of Plant: Stinking mayweed is an annual.
Flowers: Stinking mayweed has a daisy-like flower, yellow in the centre which is surrounded by white florets.
Fruit/Seed: The majority of seeds are produced through spring and summer, although as the plant may grow at any time of the year, seed production occurs throughout the year.
Dispersal: Reproduces by seed. The plant germinates mainly in Autumn and Spring but it can germinate any time in the year if there is plenty of moisture.
Distribution: This weed is located on roadsides, cultivated paddocks and waste places.
Status: Secondary in Tasmania.
- Stinking mayweed contaminates animal products if ingested, although it is seldom eaten due to its pungent nature.
- May cause poisoning in poultry.
- Possibly causes human dermatitis.
For further information contact the Department of Primary Industry, Water and Environment, Tasmania.
- Grubbing. Isolated plants and small infestations can be removed using hand tools.
- Pasture management (all year). Maintaining a vigorous pasture and avoiding overgrazing will help control stinking mayweed.
- Herbicides (summer). Spot spray for smaller patches and boom spray for larger areas. Herbicides registered in Tasmania include 2,4-D, MCPA and glyphosate.
N.B. Always check the herbicide label before use.