Troubleshooting
Daylily 'Happy Returns' problems — and how to fix them
Daylily 'Happy Returns' (Hemerocallis 'Happy Returns') 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.
Reduced reblooming
Insufficient sunlight or overcrowded clumps are the main causes. Move to a sunnier location or divide the clump.
Daylily rust
Orange pustules on foliage; remove infected leaves promptly, improve air circulation, and apply a systemic fungicide if severe.
Aphid infestations
Appear on tender new growth and flower buds. Treat with insecticidal soap or neem oil; natural predators provide good control.
Slug and snail damage
Young emerging foliage is targeted in spring. Apply organic iron phosphate slug bait or use copper barrier tape around clumps.
Clump congestion after 4-5 years
Flowering declines as the centre of the clump dies out. Divide in late summer, enrich soil, and replant outer sections.
Prevent daylily 'happy returns' problems before they start
Most daylily 'happy returns' issues are care-mismatch, not bad luck. Dial in the basics:
Daylily 'Happy Returns' problems — FAQ
Why is my daylily 'happy returns' reduced reblooming?
Insufficient sunlight or overcrowded clumps are the main causes. Move to a sunnier location or divide the clump.
Why is my daylily 'happy returns' daylily rust?
Orange pustules on foliage; remove infected leaves promptly, improve air circulation, and apply a systemic fungicide if severe.
Why is my daylily 'happy returns' aphid infestations?
Appear on tender new growth and flower buds. Treat with insecticidal soap or neem oil; natural predators provide good control.
Why is my daylily 'happy returns' slug and snail damage?
Young emerging foliage is targeted in spring. Apply organic iron phosphate slug bait or use copper barrier tape around clumps.
Why is my daylily 'happy returns' clump congestion after 4-5 years?
Flowering declines as the centre of the clump dies out. Divide in late summer, enrich soil, and replant outer sections.