Troubleshooting
Henry's Lily problems — and how to fix them
Henry's Lily (Lilium henryi) 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.
Lily beetle
The scarlet lily beetle is the primary pest. Adults and larvae consume foliage and can defoliate plants within days. Inspect weekly and remove by hand or treat with an approved insecticide.
Stem collapse in wind
Tall stems need staking in exposed gardens. Insert a sturdy cane at planting time to avoid disturbing the bulb later.
Botrytis
Grey mould in cool, wet summers can attack flowers and foliage. Improve air circulation and deadhead promptly.
Virus
Mosaic virus causes yellow mottling and distorted flowers. Remove infected plants and control aphid vectors.
Overwintering bulb rot
Rarely a problem in well-drained soils, but in very heavy clay a deep gravel layer under the bulb at planting time provides insurance.
Prevent henry's lily problems before they start
Most henry's lily issues are care-mismatch, not bad luck. Dial in the basics:
Henry's Lily problems — FAQ
Why is my henry's lily lily beetle?
The scarlet lily beetle is the primary pest. Adults and larvae consume foliage and can defoliate plants within days. Inspect weekly and remove by hand or treat with an approved insecticide.
Why is my henry's lily stem collapse in wind?
Tall stems need staking in exposed gardens. Insert a sturdy cane at planting time to avoid disturbing the bulb later.
Why is my henry's lily botrytis?
Grey mould in cool, wet summers can attack flowers and foliage. Improve air circulation and deadhead promptly.
Why is my henry's lily virus?
Mosaic virus causes yellow mottling and distorted flowers. Remove infected plants and control aphid vectors.
Why is my henry's lily overwintering bulb rot?
Rarely a problem in well-drained soils, but in very heavy clay a deep gravel layer under the bulb at planting time provides insurance.