Troubleshooting
Barbecue Rosemary problems — and how to fix them
Barbecue Rosemary (Rosmarinus officinalis 'Barbecue') is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Root rot
Caused by overly wet, poorly drained soil — the single most common cause of rosemary death in containers. The foliage turns brown or grey and the base of the stems blackens. Remove affected plants from waterlogged conditions, trim diseased roots, and repot into a gritty, fast-draining mix.
Rosemary beetle (Chrysolina americana)
Metallic green-and-purple beetles and their larvae skeletonize foliage from late summer through winter in the UK and warm US regions. Check stems regularly and pick off adults and larvae by hand. Pyrethrum-based sprays offer control if infestations are severe.
Legginess after harvest
Heavy cutting for skewers can leave the plant with bare, woody stems that rarely re-shoot. Always cut stems back to live, leafy growth and never remove more than one-third of the plant at once. Lightly prune after flowering to maintain bushy shape.
Prevent barbecue rosemary problems before they start
Most barbecue rosemary issues are care-mismatch, not bad luck. Dial in the basics:
- Common rosemary problems — the species this cultivar belongs to
- Common barbecue rosemary problems — our other guide for the same plant
- What's wrong with my plant? — the diagnosis apps compared
- Barbecue Rosemary watering schedule
- Barbecue Rosemary light requirements
- Best soil mix for barbecue rosemary
- Barbecue Rosemary temperature & humidity
- Full barbecue rosemary care guide
Looking for the species overview? Rosemary — the full care guide.
Other Rosemary varieties
Barbecue Rosemary problems — FAQ
Why is my barbecue rosemary root rot?
Caused by overly wet, poorly drained soil — the single most common cause of rosemary death in containers. The foliage turns brown or grey and the base of the stems blackens. Remove affected plants from waterlogged conditions, trim diseased roots, and repot into a gritty, fast-draining mix.
Why is my barbecue rosemary rosemary beetle (chrysolina americana)?
Metallic green-and-purple beetles and their larvae skeletonize foliage from late summer through winter in the UK and warm US regions. Check stems regularly and pick off adults and larvae by hand. Pyrethrum-based sprays offer control if infestations are severe.
Why is my barbecue rosemary legginess after harvest?
Heavy cutting for skewers can leave the plant with bare, woody stems that rarely re-shoot. Always cut stems back to live, leafy growth and never remove more than one-third of the plant at once. Lightly prune after flowering to maintain bushy shape.