Troubleshooting
Zantedeschia pentlandii problems — and how to fix them
Zantedeschia pentlandii (Zantedeschia pentlandii) 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
Cold, wet soil during dormancy is the main risk; keep the dormant tuber dry and grow in free-draining mix during the season.
Poor flowering
Too little light or an immature/overcrowded tuber reduces blooms; give a brighter position and divide congested clumps.
Yellowing in late summer
Natural onset of dormancy; reduce water and let the foliage die down rather than treating it as a problem.
Spider mites and aphids
Sap-suckers attack foliage and flower stems in warm, dry spells; inspect regularly and treat early with insecticidal soap.
Prevent zantedeschia pentlandii problems before they start
Most zantedeschia pentlandii issues are care-mismatch, not bad luck. Dial in the basics:
Looking for zantedeschia pentlandii in general rather than its problems? Read the full zantedeschia pentlandii care guide — light, water, soil and feeding.
Zantedeschia pentlandii problems — FAQ
Why is my zantedeschia pentlandii tuber rot?
Cold, wet soil during dormancy is the main risk; keep the dormant tuber dry and grow in free-draining mix during the season.
Why is my zantedeschia pentlandii poor flowering?
Too little light or an immature/overcrowded tuber reduces blooms; give a brighter position and divide congested clumps.
Why is my zantedeschia pentlandii yellowing in late summer?
Natural onset of dormancy; reduce water and let the foliage die down rather than treating it as a problem.
Why is my zantedeschia pentlandii spider mites and aphids?
Sap-suckers attack foliage and flower stems in warm, dry spells; inspect regularly and treat early with insecticidal soap.