Glaucidium palmatum

RHS Plant Profile
palmate glaucidium

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palmate glaucidium Dorling Kindersley 2003
palmate glaucidium RHS
Herbaceous Perennial
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a rhizomatous perennial to 45cm in height, forming a clump of broad, deeply lobed, light green leaves to 20cm in width; solitary, terminal, pale lavender flowers 6-8cm in width

Position

Full shade, Partial shade

Soil Types

Chalk, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
5–10 years
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

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

Position

Full shade Partial shade
Aspect
South–facing or East–facing or North–facing or West–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)
H5

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Ranunculaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Clump forming
Genus
Glaucidium are slow-growing, rhizomatous herbaceous perennials with rounded, palmately-lobed leaves and large, poppy-like mauve or white flowers in late spring and early summer
Name Status
Correct
Plant Range
C & N Japan

How to Grow

Cultivation

Grow in a humus rich, leafy soil with protection from cold drying winds. Dislikes high temperatures and thrives in cool, moist climates

Propagation

Propagate by seed by seed sown in spring in containers in an open cold frame or by careful division of mature clumps in early spring

Suggested planting locations and garden types

  • Cottage and informal garden
  • Banks and slopes
  • Ground cover
  • Flower borders and beds

Pruning

No pruning required

Pests

May be susceptible to slugs

Diseases

Generally disease-free