Troubleshooting
Lavandin problems — and how to fix them
Lavandin (Lavandula × intermedia) 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 from wet soil
The most common killer. Heavy, poorly drained, or overwatered soil rots the roots and crown. Plant in gritty, free-draining ground and water sparingly.
Woody, bare centers
Unpruned plants become leggy and gappy at the base. Prune lightly after flowering, never into old leafless wood, to keep a tidy, dense dome.
Poor flowering in shade or rich soil
Too little sun or over-feeding yields lush foliage but few spikes. Give full sun and lean soil, and hold back on nitrogen.
Fungal dieback in humid climates
Phytophthora and shab disease cause sudden wilting branches in damp, crowded conditions. Improve spacing and airflow and remove affected stems promptly.
Prevent lavandin problems before they start
Most lavandin issues are care-mismatch, not bad luck. Dial in the basics:
Looking for lavandin in general rather than its problems? Read the full lavandin care guide — light, water, soil and feeding.
Lavandin problems — FAQ
Why is my lavandin root rot from wet soil?
The most common killer. Heavy, poorly drained, or overwatered soil rots the roots and crown. Plant in gritty, free-draining ground and water sparingly.
Why is my lavandin woody, bare centers?
Unpruned plants become leggy and gappy at the base. Prune lightly after flowering, never into old leafless wood, to keep a tidy, dense dome.
Why is my lavandin poor flowering in shade or rich soil?
Too little sun or over-feeding yields lush foliage but few spikes. Give full sun and lean soil, and hold back on nitrogen.
Why is my lavandin fungal dieback in humid climates?
Phytophthora and shab disease cause sudden wilting branches in damp, crowded conditions. Improve spacing and airflow and remove affected stems promptly.