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Herbaceous PerennialShrubs

Euphorbia ceratocarpa
  • RHS AGM
  • RHS Plants for pollinators

horned spurge

A tall, upright, evergreen, sub-shrub to about 170cm in height and spread with slightly bluish foliage. The main flowering period is mid-summer to mid-autumn, but it can produce its yellow-green flowers more or less year round in mild conditions

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Size
Ultimate height
1.5–2.5 metres
Time to ultimate height
2–5 years
Ultimate spread
1.5–2.5 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green Yellow Blue Green
Summer Green Yellow Blue Green
Autumn Green Yellow Blue Green
Winter Blue Green
Position
  • Full sun
Aspect

South–facing or West–facing or East–facing

Exposure
Sheltered
Drought resistance
Yes
Hardiness
H4
Botanical details
Family
Euphorbiaceae
Native to GB / Ireland
No
Foliage
Evergreen
Habit
Bushy
Potentially harmful
Humans/Pets: IRRITANT to skin/eye, harmful 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

Correct

Plant range
Sicily, S. Italy

How to grow

Cultivation

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

Propagation

Propagate by softwood 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
  • Wildlife gardens
  • Flower borders and beds
Pruning

Cut back flowered stems as they fade

Pests

May be susceptible to aphids

Diseases

May be susceptible to root and stem rots in wet conditions

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