Rebutia 'Stardust'

RHS Plant Profile

crown cactus 'Stardust'

RHS

Cactus Succulent Conservatory Greenhouse Houseplants

'Stardust' is a clump-forming, small cactus with barrel-shaped stems covered in short, white spines. Star-shaped spring flowers have dark pink outer petals and pale pink to white inner petals

Position

Full sun

Soil Types

Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

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

Growing Conditions

Loam Sand

Moisture: Well–drained
pH: Acid or 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): H2

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Cactaceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Clump forming
Genus: Rebutia can be solitary or clustering cacti, with globose or shortly cylindrical, ribbed or tuberculate stems, and showy funnel-shaped flowers
Name Status: Unresolved

How to Grow

Cultivation

Under glass, grow in standard cactus compost in full light with low humidity. From March to October, water only when compost approaches dryness and apply a balanced liquid fertiliser 3 or 4 times during the growing season; keep dry during the winter. See houseplant cacti and succulent cultivation

Propagation

Propagate by seed or remove offsets and pot up separately in spring and summer

Suggested planting locations and garden types

Patio and container plants
Low Maintenance

Pruning

No pruning required

Pests

Can be susceptible to mealybugs, especially during the spring

Diseases

Generally disease-free