
Rosemary beetle adults remain inactive on their host plants during the summer months (June to August). In late August and September the beetles resume feeding, mate and begin to lay eggs, which they continue to do on warm winter days until spring. The eggs hatch within two weeks and the larvae feed for approximately three weeks before entering the soil to pupate. The pupal stage lasts for a further two to three weeks before adults emerge.
Discuss Rosemary leaf beetle with other Shoot members.
Login or register to add a comment or question about this plant problem.