Euphorbia rigida

RHS Plant Profile
upright myrtle spurge

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Synonyms

Euphorbia biglandulosa Desf.

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Herbaceous Perennial
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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

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

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

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained or Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
East–facing or South–facing or North–facing or West–facing
Exposure
Exposed or Sheltered
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)
H6
Drought Resistance
Yes

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Euphorbiaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy
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
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