What is rosemary beetle?
Rosemary beetle is an insect that eats the foliage and flowers of various aromatic plants, such as rosemary, lavender, sage, thyme and some other related plants.
Rosemary beetle has spread rapidly since first being found breeding in central London in the late 1990s. It is now widespread throughout England and Wales. It is established in Scotland, present in Northern Ireland and may be established in parts of the Republic of Ireland.
Both the adult beetles and the larvae feed on the foliage and flowers of host plants, and are most active between late summer and the spring.