Hemerocallis

Hemerocallis lilioasphodelus

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verifiedReviewed by the GreenScout Team

Commonly known as daylily, this species produces delicate, fragrant yellow trumpet-shaped flowers that open in morning and close by evening. Growing 2–3 feet tall, it forms spreading clumps and blooms reliably over several weeks in late spring to early summer. Daylilies are exceptionally low-maintenance, drought-tolerant, and adaptable to many growing conditions.

Common Problems

Select the problem your Hemerocallis is experiencing to get a treatment guide.

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Yellow Leaveschevron_right

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Underwateringchevron_right

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Slow Growthchevron_right

Care Guide

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Light

Full sun to partial shade (at least 4–6 hours of sun for best blooming); tolerates shade but flowers less profusely

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Water

Low to moderate; drought-tolerant once established; water during dry periods; no special requirements

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Soil

Tolerates a wide range of soils; prefers well-drained, fertile soil but adapts to poor conditions and various pH levels

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Fertiliser

Minimal fertilizer needed; light application of balanced fertilizer in spring enhances vigor

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Temperature

Adapts to cool to warm temperatures; very cold hardy

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Humidity

Tolerant of various humidity levels; good air circulation helpful

Toxicity

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Toxic to cats; all parts are toxic and can cause kidney failure; safe for dogs and children

Common Diseases

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Common Pests

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Seasonal Care

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Resume regular watering and feeding as growth picks up.

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Peak growing season. Water and feed regularly.

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Reduce watering as growth slows. Stop heavy feeding.

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Minimal watering and feeding. Protect from frost if needed.

Frequently Asked Questions

Why does each Hemerocallis flower only last one day?

That's the origin of the daylily name — each fragrant yellow trumpet-shaped bloom opens in the morning and closes by evening, but the plant produces a continuous succession of new flowers over several weeks.

How much care does established Hemerocallis need?

Very little — daylilies are exceptionally low-maintenance and drought-tolerant, adapting to many growing conditions and forming spreading clumps with minimal intervention.