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Hemerocallis lilioasphodelus

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© RHS 2002

Characteristics

Plant type

Herbaceous Perennial

Habit

Spreading / Branched

Fragrance

Flower

Resilience

Hardiness

old H4 (hardy)

Colour

Flower

Pale Yellow in Summer

Foliage

Green in Autumn, Spring, Summer and Winter

Size

Ultimate height

0.5-1 metres

Ultimate spread

0.5-1 metres

Time to ultimate height

2-5 years


Preferred common name

yellow day lily

Family

Hemerocallidaceae


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

H. lilioasphodelus is a spreading rhizomatous perennial to 80cm in height, with narrow leaves and fragrant, lily-shaped light yellow flowers 8-9cm in width

Other common names

  • common yellow day lily
  • yellow day-lily

Synonym(s)

  • Hemerocallis flava
  • Hemerocallis 'Lilioasphodelus'

How to grow

Sunlight

  • Full sun

Aspect

  • South-facing, East-facing or West-facing
  • Exposed or Sheltered

Cultivation

Grow in a fertile, moist but well-drained soil preferably in full sun. Copes well with heavy clay. May need watering in spring to early summer in dry conditions to ensure flowering

Soil

  • Moist but well-drained or Poorly-drained
  • Acid, Alkaline or Neutral
  • Clay, Loam or Chalk

Propagation

Propagate by division in spring or autumn; evergreen plants are best divided in spring

Suggested planting locations and garden types

Cottage/Informal Garden, Flower borders and beds, Prairie Planting, Coastal or Low Maintenance


How to care

Pruning

Remove spent flowers and remove dead foliage as required.

Pests

Can get aphids and hemerocallis gall midge

Diseases

May be affected by a leaf spot