Haworthia cooperi

RHS Plant Profile
Cooper's haworthia

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Cooper's haworthia RHS
Cactus Succulent Conservatory Greenhouse Houseplants
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A slow-growing succulent forming a low clump of fleshy, pale green eaves up to 5cm long. Leaves may be triangular or rounded in shape and have transparent tips and bristly margins and keels. White to pinkish-white flowers are borne on stems up to 40cm long in spring or summer

Position

Full sun

Soil Types

Loam, Sand

Max Height

Up to 10 cm

Max Spread

0-0.1 metre

Size

Time to Maturity
5–10 years
Max Spread
0-0.1 metre
Max Height
Up to 10 cm

Growing Conditions

Loam Sand
Moisture
Well–drained
pH
Alkaline or Neutral

Position

Full sun
Aspect
East–facing or North–facing
Exposure
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)
H2

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Asphodelaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Clump forming
Genus
Haworthia are stemless succulent perennials forming rosettes of fleshy leaves often bearing white tubercles, and with tubular flowers in racemes
Name Status
Correct

How to Grow

Cultivation

Grow under glass in a standard cactus compost, in full light. Provide low humidity. Water freely when in growth and keep just moist at other times. Apply a dilute low-nitrogen fertiliser fortnightly during late spring and summer. Stand outside in summer. See houseplant cacti and succulent cultivation and Haworthia for further advice

Propagation

Propagate by seed or offsets

Suggested planting locations and garden types

  • Patio and container plants
  • Low Maintenance

Pruning

No pruning required

Pests

May be susceptible to mealybugs

Diseases

Generally disease-free