Troubleshooting
Titan Arum problems — and how to fix them
Titan Arum (Amorphophallus titanum) 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.
Corm rot
The most common killer, from overwatering during dormancy or poorly drained mix. Use a gritty, free-draining medium and keep the dormant corm barely moist and warm.
Insufficient warmth and humidity
Cool, dry air stalls growth and damages the leaf. It needs sustained tropical warmth and high humidity, realistically a heated greenhouse outside the tropics.
Reluctance to flower
Flowering requires many years and a very large, well-fed corm. Feed heavily in growth and be patient; blooms are rare even in cultivation.
Leaf scorch or collapse
Direct sun burns the leaf, and the leaf naturally collapses at the end of each growth cycle. Provide filtered light and expect the dormancy die-back.
Prevent titan arum problems before they start
Most titan arum issues are care-mismatch, not bad luck. Dial in the basics:
Looking for titan arum in general rather than its problems? Read the full titan arum care guide — light, water, soil and feeding.
Titan Arum problems — FAQ
Why is my titan arum corm rot?
The most common killer, from overwatering during dormancy or poorly drained mix. Use a gritty, free-draining medium and keep the dormant corm barely moist and warm.
Why is my titan arum insufficient warmth and humidity?
Cool, dry air stalls growth and damages the leaf. It needs sustained tropical warmth and high humidity, realistically a heated greenhouse outside the tropics.
Why is my titan arum reluctance to flower?
Flowering requires many years and a very large, well-fed corm. Feed heavily in growth and be patient; blooms are rare even in cultivation.
Why is my titan arum leaf scorch or collapse?
Direct sun burns the leaf, and the leaf naturally collapses at the end of each growth cycle. Provide filtered light and expect the dormancy die-back.