Rosemary beetle
Pest Attractive metallic beetles that eat rosemary, lavender, thyme and sage.
What to look for
Metallic green and purple striped beetles, and fat grubs, chewing leaves and shoot tips of rosemary and lavender.
When: Mostly from September to April, with a second peak in early summer.
How to prevent it
- Check plants regularly from late summer to spring.
- Keep plants healthy and avoid overwatering.
How to deal with it
- Shake plants over a sheet and remove the beetles and grubs by hand.
- Repeat every few days until numbers drop.
Crops it affects
If you choose to use any treatment, use only products approved for UK home gardens, follow the label and avoid spraying open flowers. See all pests and diseases.