Amsonia 'Blue Ice'

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bluestar 'Blue Ice'

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bluestar 'Blue Ice' RHS
Herbaceous Perennial
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A clump-forming, compact, deciduous perennial, with lance-shaped, dark green leaves with a paler mid-vein, fading to yellow orange and gold in the autumn. In late spring and early summer, terminal panicles of starry-shaped, periwinkle blue flowers appear

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
2–5 years
Max Spread
0.5-1 metres
Max Height
0.1-0.5 metres

Growing Conditions

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

Position

Full sun Partial shade
Aspect
North–facing or South–facing or East–facing or West–facing
Exposure
Exposed or 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
Drought Resistance
Yes

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Apocynaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Clump forming
Genus
Amsonia are clump-forming perennials with milky sap, lance-shaped leaves and terminal panicles of small, starry blue flowers in spring and summer
Name Status
Accepted

How to Grow

Cultivation

Grow in moist well-drained soil in full sun or light shade. Can tolerate periods of drought

Propagation

Propagate by seed or division

Suggested planting locations and garden types

  • Coastal
  • Cottage and informal garden
  • Prairie planting
  • Ground cover

Pruning

Cut back in late autumn after leaf colour show

Pests

Generally pest-free. Slug and snail resistant

Diseases

Generally disease-free