Crassula arborescens

RHS Plant Profile

silver dollar

Other common names

African rubber plant, Brazilian rubber plant, Chinese jade, Chinese rubber plant, house oak, jade tree, Japanese rubber plant, Persian rubber plant, silver jade plant, tongue-leaf milk plant, tree purslane

Synonyms

Crassula atropurpurea var. arborescens

Cactus Succulent

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A shrub-like succulent to 1m or more, with stout, branched stems and fleshy, grey-green leaves, often with red margins and red-spotted above. From autumn to winter it may produce star-shaped pink flowers, however these are rarely produced on pot plants

Position

Full sun

Soil Types

Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

Time to Maturity: 5–10 years
Max Spread: 0.5-1 metres
Max Height: 0.5-1 metres

Growing Conditions

Loam Sand

Moisture: Well–drained or Moist but well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun

Aspect: East–facing or South–facing or West–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: Crassulaceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Bushy
Genus: Crassula can be succulent annuals, perennials, evergreen shrubs or sub-shrubs, with fleshy leaves and small, star-shaped or funnel-shaped flowers in a terminal cluster
Name Status: Correct
Plant Range: South Africa (Cape)

How to Grow

Cultivation

Grow in pots of cactus compost in full light. Water moderately and apply a balanced liquid fertiliser monthly during the growing season; water sparingly in winter. See houseplant cacti and succulent cultivation for further information

Propagation

Propagate by sowing seed at 15°C in early spring, or stem or leaf cuttings in spring and summer

Suggested planting locations and garden types

Houseplants
Low Maintenance
Conservatory and greenhouse

Pruning

No pruning required

Pests

May be susceptible to mealybugs, vine weevil and aphids

Diseases

Generally disease-free