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Herbaceous Perennial

Euphorbia rigida

upright myrtle spurge

E. rigida is an erect, then spreading, evergreen perennial. The blue-green leaves are fleshy, and arranged spirally. Bright yellow flowers appear in small clusters at the tips of the shoots in late spring and early summer

Synonyms

Euphorbia biglandulosa Desf.

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Ultimate height

0.1–0.5 metres

Time to ultimate height

2–5 years

Ultimate spread

0.1–0.5 metres

Chalk

Clay

Loam

Sand

Moisture

Moist but well–drained, Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun
Partial shade

Aspect

East–facing or South–facing or North–facing or West–facing

Exposure

Exposed or 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 the UK: No
Foliage: Evergreen
Habit: Bushy
Potentially harmful: All parts may cause severe discomfort if eaten, and the milky sap can irritate skin. Wear gloves and other protective equipment when handling
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: S Europe, SW Asia, NW Africa

How to grow

Cultivation

Will tolerate most garden situations but does best in well-drained soil in a sunny position

Propagation

Propagate by division

Suggested planting locations and garden types

Architectural
Patio and container plants
Mediterranean climate plants
Coastal
Gravel garden
Rock garden
Low Maintenance
Banks and slopes
Underplanting of roses and shrubs

Pruning

No pruning needed

Pests

Generally problem free

Diseases

Generally problem free

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