Troubleshooting
Sea Campion problems — and how to fix them
Sea Campion (Silene uniflora) 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 in poorly drained soil
Wet, heavy soils, particularly in winter, cause root and crown rot. Always grow in well-drained or gritty soil; raised beds or slopes are ideal in heavy-soil gardens.
Aphid infestations
The inflated calyces and new shoots attract aphids in spring. Treat with insecticidal soap or a gentle water jet. Avoid excess nitrogen feeding, which encourages aphid-preferred soft growth.
Rust disease (Puccinia)
Orange-brown pustules on leaves indicate rust fungus, which can affect Silene species. Remove affected tissue promptly, improve air circulation, and avoid wetting foliage. Copper-based fungicide can be used as a preventive.
Prevent sea campion problems before they start
Most sea campion issues are care-mismatch, not bad luck. Dial in the basics:
Sea Campion problems — FAQ
Why is my sea campion root rot in poorly drained soil?
Wet, heavy soils, particularly in winter, cause root and crown rot. Always grow in well-drained or gritty soil; raised beds or slopes are ideal in heavy-soil gardens.
Why is my sea campion aphid infestations?
The inflated calyces and new shoots attract aphids in spring. Treat with insecticidal soap or a gentle water jet. Avoid excess nitrogen feeding, which encourages aphid-preferred soft growth.
Why is my sea campion rust disease (puccinia)?
Orange-brown pustules on leaves indicate rust fungus, which can affect Silene species. Remove affected tissue promptly, improve air circulation, and avoid wetting foliage. Copper-based fungicide can be used as a preventive.