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Cactus SucculentSynonym

Sedum praealtum

greater Mexican stonecrop

A succulent subshrub growing to 60cm height, with grey-brown woody-like stems, and club-shaped pale green, fleshy leaves that form a rosette on stems that bear yellow star-shaped flowers in spring

Synonyms

Sedum praealtum

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Ultimate height

0.5–1 metres

Time to ultimate height

2–5 years

Ultimate spread

0.5–1 metres

Chalk

Loam

Sand

Moisture

Well–drained

pH

Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

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)

Botanical details

Family: Crassulaceae
Native to GB / Ireland: No
Foliage: Evergreen
Habit: Spreading branched
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: Correct

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 early summer; detached leaves root readily

Suggested planting locations and garden types

City and courtyard gardens
Coastal
Cottage and informal garden
Houseplants
Patio and container plants
Sub-tropical
Conservatory and greenhouse

Pruning

No pruning required

Pests

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

Diseases

May be susceptible to fungal and bacterial crown and root rots

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