Euphorbia 'Copton Ash'

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spurge 'Copton Ash'

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Herbaceous Perennial
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An upright to spreading, evergreen herbaceous perennial to about 40cm with narrow, pointed, blue-grey foliage, and acid yellow-green flowers from late spring to late summer

Position

Full sun

Soil Types

Chalk, 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 Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
West–facing or South–facing or East–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
Drought Resistance
Yes

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Euphorbiaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy
Potentially harmful
Humans/Pets: IRRITANT to skin/eyeharmful if eaten. Wear gloves and other protective equipment when handling. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus
Euphorbia can be annuals, perennials, shrubs or succulents, with milky sap and small flowers held within cupped, often colourful bracts
Name Status
Accepted

How to Grow

Cultivation

Grow in well-drained, light soil in full sun. See Euphorbia for further advice

Propagation

Propagate by division or take basal cuttings in spring or early summer; dip cut surfaces in charcoal or lukewarm water to prevent bleeding

Suggested planting locations and garden types

  • Cottage and informal garden
  • Gravel garden
  • Mediterranean climate plants
  • Wildlife gardens
  • Flower borders and beds
  • Ground cover

Pruning

Cut back flowered shoots to ground level in late summer or autumn

Pests

May be susceptible to aphids

Diseases

Generally disease-free