Troubleshooting
Dioscorides' Arum problems — and how to fix them
Dioscorides' Arum (Arum dioscoridis) 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.
Tuber rot in dormancy
The most common failure: if the tuber stays wet through summer, it rots. Store tubers dry or ensure pots are kept bone dry and under cover from summer rains.
No flowers
Young or undersized tubers may not flower. Ensure the tuber reaches a mature size (5+ cm diameter), feed appropriately in autumn, and provide bright light during the growing season.
Frost damage
Hardy to around -5°C but prolonged hard frosts can damage emerging winter foliage. In cold regions, mulch with dry grit or bring pots under glass before hard frosts arrive.
Prevent dioscorides' arum problems before they start
Most dioscorides' arum issues are care-mismatch, not bad luck. Dial in the basics:
Dioscorides' Arum problems — FAQ
Why is my dioscorides' arum tuber rot in dormancy?
The most common failure: if the tuber stays wet through summer, it rots. Store tubers dry or ensure pots are kept bone dry and under cover from summer rains.
Why is my dioscorides' arum no flowers?
Young or undersized tubers may not flower. Ensure the tuber reaches a mature size (5+ cm diameter), feed appropriately in autumn, and provide bright light during the growing season.
Why is my dioscorides' arum frost damage?
Hardy to around -5°C but prolonged hard frosts can damage emerging winter foliage. In cold regions, mulch with dry grit or bring pots under glass before hard frosts arrive.