Rebutia mentosa subsp. mentosa

RHS Plant Profile
yellow crown cactus

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yellow crown cactus RHS

Other common names

crown cactus

Synonyms

Sulcorebutia flavissima
Sulcorebutia albissima

Cactus Succulent Houseplants Conservatory Greenhouse

A cactus with simple or clustering stems to 10cm tall, 6cm diameter, bearing central spines to 3cm, and comb-like radial spines; flowers rosy-purple, 3.5cm across

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
Acid 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
Bushy
Genus
Rebutia can be solitary or clustering cacti, with globose or shortly cylindrical, ribbed or tuberculate stems, and showy funnel-shaped flowers
Name Status
Correct
Plant Range
Bolivia

How to Grow

Cultivation

Under glass, grow in standard cactus compost in full light, with low humidity. From spring to summer, water moderately and apply a balanced liquid fertiliser 3 or 4 times

Propagation

Propagate by seed at 21°C (70°F) in early spring, or remove from offsets in spring or summer

Suggested planting locations and garden types

  • Patio and container plants

Pruning

No pruning required

Pests

May be susceptible to mealybugs early in the growing season

Diseases

Generally disease-free