Rohdea japonica

RHS Plant Profile
Japanese sacred lily

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Other common names

omoto

Herbaceous Perennial
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A rhizomatous perennialto 25cm with rosettes of dark green, leathery, strap-shaped leaves up to 45cm long. In early spring produces a short, upright spike of tightly packed, greenish-white, bell-shaped flowers, followed by red berries

Position

Full shade, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full shade Partial shade
Aspect
West–facing or East–facing or North–facing
Exposure
Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H4

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Asparagaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy
Genus
Rohdea are rhizomatous perennials with basal rosettes of fleshy, dark green leaves and erect spikes of narrowly bell-shaped flowers in early spring
Name Status
Correct
Plant Range
China and Japan

How to Grow

Cultivation

Grow in moist, humus-rich, moderately fertile soil in full or partial shade

Propagation

Propagate by seed sown in containers in a cold frame in autumn, or by division in spring

Suggested planting locations and garden types

  • City and courtyard gardens
  • Patio and container plants
  • Sub-tropical
  • Flower borders and beds
  • Underplanting of roses and shrubs

Pruning

No pruning required

Pests

May be susceptible to damage by slugs, snails and vine weevil larvae

Diseases

Generally disease-free