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Herbaceous Perennial

Euphorbia rigida

upright myrtle spurge

An erect, then spreading, evergreen perennial to 60cm tall. 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: 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: 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. See Euphorbia for further advice

Propagation

Propagate by division

Suggested planting locations and garden types

Patio and container plants
Mediterranean climate plants
Coastal
Gravel garden
Rock garden
Cottage and informal garden
Wildlife gardens
Low Maintenance

Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free

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