Troubleshooting
Green Lavender problems — and how to fix them
Green Lavender (Lavandula viridis) is generally low-drama, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Rosemary beetle (Chrysolina americana)
Adults and larvae graze foliage from late summer onward, leaving plants weakened before winter. Inspect regularly from August; hand-pick beetles at dusk or treat with a contact insecticide registered for edible herbs if needed.
Xylella fastidiosa (high-risk host)
Green lavender, in common with other stoechas-group lavenders, is classified as a high-risk host for this serious bacterial wilt pathogen. When sourcing plants, buy only from reputable suppliers with appropriate plant-health documentation, especially if importing from southern Europe.
Prevent green lavender problems before they start
Most green lavender issues are care-mismatch, not bad luck. Dial in the basics:
Green Lavender problems — FAQ
Why is my green lavender rosemary beetle (chrysolina americana)?
Adults and larvae graze foliage from late summer onward, leaving plants weakened before winter. Inspect regularly from August; hand-pick beetles at dusk or treat with a contact insecticide registered for edible herbs if needed.
Why is my green lavender xylella fastidiosa (high-risk host)?
Green lavender, in common with other stoechas-group lavenders, is classified as a high-risk host for this serious bacterial wilt pathogen. When sourcing plants, buy only from reputable suppliers with appropriate plant-health documentation, especially if importing from southern Europe.