Sedum polytrichoides 'Chocolate Ball'

RHS Plant Profile

stonecrop 'Chocolate Ball'

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Synonyms

Sedum rupestre 'Chocolate Ball'
Sedum hakonense 'Chocolate Ball'
Sedum 'Chocolate Ball'

Cactus Succulent Conservatory Greenhouse

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A mound-forming, succulent perennial to 10cm tall, with fleshy, needle-like, dark bronze leaves densely packed on trailing, rooting stems. In summer it produces clusters of small, starry yellow flowers above the foliage

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

Up to 10 cm

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 2–5 years
Max Spread: 0.1-0.5 metres
Max Height: Up to 10 cm

Growing Conditions

Chalk Loam Sand

Moisture: Well–drained
pH: Alkaline or Neutral

Position

Full sun

Aspect: 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): H3
Drought Resistance: Yes

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Crassulaceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Matforming
Genus: Sedum may be annuals or herbaceous or evergreen perennials with succulent stems and leaves and clusters of small, star-shaped flowers in summer or autumn
Name Status: Accepted

How to Grow

Cultivation

Under glass, grow in peat-free, loam-based compost with added perlite, positioning plants in bright, filtered light. Water freely in the growing season and apply a half-strength liquid fertiliser monthly; water sparingly in winter. Potted plants can be moved onto the patio in summer. See houseplant cacti and succulent cultivation

Propagation

Propagate by softwood cuttings in spring

Suggested planting locations and garden types

Cottage and informal garden
Patio and container plants
Mediterranean climate plants
Coastal
Conservatory and greenhouse

Pruning

No pruning required

Pests

May be susceptible to vine weevil grubs, scale insects and mealybugs

Diseases

May be susceptible to fungal and bacterial crown and root rots