Troubleshooting
Autumn Arum problems — and how to fix them
Autumn Arum (Arum pictum) 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 summer
The most common issue; drastically reduce watering as leaves die back and store dry through summer.
No autumn flowers
Tuber too small or insufficient summer heat ripening; plant in a sunnier spot and ensure summer temperatures reach 20°C+.
Leaf marbling loss
Too much shade reduces the attractive variegation; increase indirect light.
Vine weevil damage
Larvae attack tubers; inspect when repotting and use nematode biological controls outdoors.
Berry ingestion risk
Red berries are toxic to pets and children; site the plant responsibly or remove berry clusters as they form.
Prevent autumn arum problems before they start
Most autumn arum issues are care-mismatch, not bad luck. Dial in the basics:
Autumn Arum problems — FAQ
Why is my autumn arum tuber rot in summer?
The most common issue; drastically reduce watering as leaves die back and store dry through summer.
Why is my autumn arum no autumn flowers?
Tuber too small or insufficient summer heat ripening; plant in a sunnier spot and ensure summer temperatures reach 20°C+.
Why is my autumn arum leaf marbling loss?
Too much shade reduces the attractive variegation; increase indirect light.
Why is my autumn arum vine weevil damage?
Larvae attack tubers; inspect when repotting and use nematode biological controls outdoors.
Why is my autumn arum berry ingestion risk?
Red berries are toxic to pets and children; site the plant responsibly or remove berry clusters as they form.