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Herbaceous PerennialShrubs

Euphorbia ceratocarpa

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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Ultimate height

1.5–2.5 metres

Time to ultimate height

2–5 years

Ultimate spread

1.5–2.5 metres

Chalk

Loam

Sand

Moisture

Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

South–facing or West–facing or East–facing

Exposure

Sheltered

Drought resistance

Yes

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)

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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