Troubleshooting
Winter heath problems — and how to fix them
Winter heath (Erica carnea) 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 (Phytophthora)
Waterlogged or poorly draining soil encourages Phytophthora root rot, causing sudden dieback. Ensure excellent drainage; avoid planting in depressions where water collects. There is no effective chemical cure — remove affected plants.
Woody, open growth
Without annual pruning after flowering, plants become woody, leggy, and sparse. Trim back to the base of the spent flower spikes each spring (April) but never cut into old, bare wood, which does not regenerate.
Honey fungus
Armillaria (honey fungus) can occasionally affect Erica carnea, causing gradual decline and dieback. There is no chemical control; remove affected plants and the surrounding soil, and avoid replanting susceptible species in the same spot.
Prevent winter heath problems before they start
Most winter heath issues are care-mismatch, not bad luck. Dial in the basics:
Winter heath problems — FAQ
Why is my winter heath root rot (phytophthora)?
Waterlogged or poorly draining soil encourages Phytophthora root rot, causing sudden dieback. Ensure excellent drainage; avoid planting in depressions where water collects. There is no effective chemical cure — remove affected plants.
Why is my winter heath woody, open growth?
Without annual pruning after flowering, plants become woody, leggy, and sparse. Trim back to the base of the spent flower spikes each spring (April) but never cut into old, bare wood, which does not regenerate.
Why is my winter heath honey fungus?
Armillaria (honey fungus) can occasionally affect Erica carnea, causing gradual decline and dieback. There is no chemical control; remove affected plants and the surrounding soil, and avoid replanting susceptible species in the same spot.