Growth Habit: An erect plant which can grow up to 1.5m in height but averages 80cm. It has a stiff, spiny stem and sticky white sap.
Type of Plant: Prickly lettuce can be an annual herb or a biennial.
Flowers: It has a yellow, daisy-like flower.
Fruit/Seed: Seeds are produced in summer.
Dispersal: Seed is easily dispersed by wind as they have the typical daisy-family parachute of hairs, which are also found on plants such as dandelions.
Distribution: This weed may be found in gardens, roadsides, wastelands, cultivated areas and degraded pastures.
Status: Undeclared in Tasmania.
- Minimal economic impact.
For further information contact the Department of Primary Industry, Water and Environment, Tasmania.
- Grubbing (all year). Ensure entire plant is removed especially the taproot.
- Herbicide (summer, spring and autumn). Herbicides registered in Tasmania include dicamba, MCPA, glyphosate, 2,4-DB and 2,4-D.
N.B. Always check the herbicide label before use.