What does it look like?
Gravel groundsel is a bushy plant that grows up to 50cm tall with stems that curve upwards, topped by individual bright yellow flowers. The fleshy leaves are up to 6cm long and 1cm wide, are sometimes toothed or lobed and usually hairless.
Why is it a problem?
Gravel groundsel grows vigorously, and produces a large number of seeds. Plants may also grow from root fragments. It is an aggressive invader of grasslands and is not eaten by cattle because of its toxicity. Grows best in well-drained, fertile, disturbed soils, however it is also able to colonise pasture, coastal areas, waste areas and roadsides.
- Broadcast spray early with 24D ester (before 1 Sept) or amine (allowed after 1 Sept) with highest label rates (~2-3l per ha).
- Follow-up with spot spray with tordon brushkiller at gorse rates up till flowering.
- Rate of kill much-reduced after flowering but can be done with brushkiller.
- Metsulfuron will also work for spot spray at gorse rates but seeing missed plants early is better with brushkiller.