Troubleshooting
French Fringed Lavender problems — and how to fix them
French Fringed Lavender (Lavandula dentata) 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.
Cold damage / frost kill
Prolonged frost below -5°C (23°F) kills stems back to the base or kills the plant outright. Grow in containers in colder climates and move under glass before the first frost.
Spittlebug (Philaenus spumarius)
Frothy white masses appear on stems in late spring; the nymph inside saps vigour. Remove by hand or blast off with a jet of water; rarely needs chemical treatment.
Prevent french fringed lavender problems before they start
Most french fringed lavender issues are care-mismatch, not bad luck. Dial in the basics:
- Common french lavender problems — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- French Fringed Lavender watering schedule
- French Fringed Lavender light requirements
- Best soil mix for french fringed lavender
- French Fringed Lavender temperature & humidity
- Full french fringed lavender care guide
Looking for french fringed lavender in general rather than its problems? Read the full french fringed lavender care guide — light, water, soil and feeding.
French Fringed Lavender problems — FAQ
Why is my french fringed lavender cold damage / frost kill?
Prolonged frost below -5°C (23°F) kills stems back to the base or kills the plant outright. Grow in containers in colder climates and move under glass before the first frost.
Why is my french fringed lavender spittlebug (philaenus spumarius)?
Frothy white masses appear on stems in late spring; the nymph inside saps vigour. Remove by hand or blast off with a jet of water; rarely needs chemical treatment.