Troubleshooting
Moroccan Lavender problems — and how to fix them
Moroccan Lavender (Lavandula maroccana) 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.
Root and crown rot
The most common problem in cultivation; even brief periods of waterlogged soil, particularly when combined with cool temperatures, rapidly kill the root system. Excellent drainage and restrained watering are the primary preventive measures.
Rosemary beetle (Chrysolina americana) and aphids
Both pests attack tender new growth; rosemary beetle larvae are especially damaging in late summer and autumn. Inspect regularly from midsummer; hand-pick beetles or apply a contact insecticide; treat aphid colonies early with insecticidal soap to prevent population build-up.
Prevent moroccan lavender problems before they start
Most moroccan lavender issues are care-mismatch, not bad luck. Dial in the basics:
Moroccan Lavender problems — FAQ
Why is my moroccan lavender root and crown rot?
The most common problem in cultivation; even brief periods of waterlogged soil, particularly when combined with cool temperatures, rapidly kill the root system. Excellent drainage and restrained watering are the primary preventive measures.
Why is my moroccan lavender rosemary beetle (chrysolina americana) and aphids?
Both pests attack tender new growth; rosemary beetle larvae are especially damaging in late summer and autumn. Inspect regularly from midsummer; hand-pick beetles or apply a contact insecticide; treat aphid colonies early with insecticidal soap to prevent population build-up.