Troubleshooting
Daylily 'Prairie Blue Eyes' problems — and how to fix them
Daylily 'Prairie Blue Eyes' (Hemerocallis 'Prairie Blue Eyes') 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.
Leaf streak
Fungal infection causing tan or brown streaking on leaves; remove affected foliage and improve airflow between plants.
Rust
Orange-yellow spore pustules on leaf undersides; apply a systemic fungicide if severe and remove infected material.
Aphids
Can colonise scapes in spring; treat promptly with insecticidal soap to prevent population build-up.
Bud drop
Buds can drop in extreme heat or after root disturbance; water consistently and avoid disturbing established clumps during the bloom period.
Hemerocallis gall midge
Larvae in swollen, unopened buds; remove and destroy all affected buds promptly to prevent adult gall midges emerging.
Prevent daylily 'prairie blue eyes' problems before they start
Most daylily 'prairie blue eyes' issues are care-mismatch, not bad luck. Dial in the basics:
Daylily 'Prairie Blue Eyes' problems — FAQ
Why is my daylily 'prairie blue eyes' leaf streak?
Fungal infection causing tan or brown streaking on leaves; remove affected foliage and improve airflow between plants.
Why is my daylily 'prairie blue eyes' rust?
Orange-yellow spore pustules on leaf undersides; apply a systemic fungicide if severe and remove infected material.
Why is my daylily 'prairie blue eyes' aphids?
Can colonise scapes in spring; treat promptly with insecticidal soap to prevent population build-up.
Why is my daylily 'prairie blue eyes' bud drop?
Buds can drop in extreme heat or after root disturbance; water consistently and avoid disturbing established clumps during the bloom period.
Why is my daylily 'prairie blue eyes' hemerocallis gall midge?
Larvae in swollen, unopened buds; remove and destroy all affected buds promptly to prevent adult gall midges emerging.