- Pasture improvement, where possible, is the best way of controlling woolly mullein. Dense, vigorous pastures help stop this and other weedy species from establishing and also reduce their growth and survival
- Grass species or cultivars appropriate to the district and infected with the right endophytes should help
- In areas where cocksfoot grows well it could be a better competitor than ryegrass.
Chemical control of woolly mullein is rarely warranted as it tends to grow in poor pasture and along roadsides. In the unlikely event that chemical control is warranted, woolly mullein is susceptible to triclopyr/aminopyralid (TordonÂ® Pastureboss) and to glyphosate but the latter will also destroy any nearby green plants of any kind.