Troubleshooting
Byzantine Colchicum problems — and how to fix them
Byzantine Colchicum (Colchicum byzantinum) 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.
Slugs damaging flowers
Slugs are the most common pest, raiding the bare, ground-level flowers as they emerge in autumn — use slug pellets (ferric phosphate) or a physical barrier of grit around the corms; night-time hand-picking is effective in small areas.
Corm rot in wet soils
Prolonged summer waterlogging rots dormant corms; ensure the planting site has good drainage and avoid sites that collect standing water — adding coarse grit beneath and around corms at planting significantly reduces the risk.
Prevent byzantine colchicum problems before they start
Most byzantine colchicum issues are care-mismatch, not bad luck. Dial in the basics:
Byzantine Colchicum problems — FAQ
Why is my byzantine colchicum slugs damaging flowers?
Slugs are the most common pest, raiding the bare, ground-level flowers as they emerge in autumn — use slug pellets (ferric phosphate) or a physical barrier of grit around the corms; night-time hand-picking is effective in small areas.
Why is my byzantine colchicum corm rot in wet soils?
Prolonged summer waterlogging rots dormant corms; ensure the planting site has good drainage and avoid sites that collect standing water — adding coarse grit beneath and around corms at planting significantly reduces the risk.