Euphorbia paralias

RHS Plant Profile

sea spurge

RHS

Other common names

llaethlys y môr

Herbaceous Perennial

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A succulent sub-shrub to 70cm with upright stems clothed in small, bluish green leaves with terminal clusters of green flowers. It is a British native, found exclusively on sand dunes

Position

Full sun

Soil Types

Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

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

Growing Conditions

Sand

Moisture: Well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun

Aspect: South–facing or West–facing
Exposure: Exposed
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: Yes
Foliage: Deciduous
Habit: Clump forming
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: Correct

How to Grow

Cultivation

Requires very well drained soil in a sunny, open position. See Euphorbia for further advice

Propagation

Propagate by seed

Suggested planting locations and garden types

Gravel garden
Coastal
Wildlife gardens
Cottage and informal garden

Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free