Hemerocallis citrina
long yellow daylily
A clump-forming, bushy herbaceous perennial with strap-like leaves to 80cm long. In midsummer, produces nocturnal, fragrant, star-shaped yellow flowers with brown-tipped sepals
Size
Ultimate height
1–1.5 metresTime to ultimate height
2–5 yearsUltimate spread
0.5–1 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Yellow | Green | ||
| Autumn | ||||
| Winter |
Position
- Full sun
Aspect
South–facing or West–facing
Exposure
Sheltered Hardiness
H6Botanical details
- Family
- Asphodelaceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Clump forming
- Potentially harmful
- TOXIC to pets (cats) - see the HTA guide to potentially harmful plants for further information and useful contact numbers
- Genus
Hemerocallis may be evergreen or herbaceous perennials, with narrow, strap-shaped leaves and funnel-shaped flowers on erect stems in late spring or early summer
- Name status
Correct
How to grow
Cultivation
Grow in fertile, well aerated soil in full sun. Water freely from spring to summer. Divide every 2-3 years to maintain vigour. See Hemerocallis cultivation for more advice
Propagation
Propagate by division in early spring or autumn, at least six weeks before the first frost. Propagate from seed sown in containers in a cold frame in autumn or spring.
Suggested planting locations and garden types
- City and courtyard gardens
- Cottage and informal garden
- Patio and container plants
- Flower borders and beds
Pruning
Cut back flower stems after flowering has finished. Remove dead foliage as required.
Pests
May be susceptible to hemerocallis gall midge, aphids, glasshouse red spider mite and thrips. Slugs and snails may damage young leaves.
Diseases
May be susceptible to rust. In climates with alternating winter frosts and thaws, bacterial leaf and stem rot (spring sickness) may be a problem; in areas with high temperatures and high humidity, crown rot may cause damage.
Get involved
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