Albuca clanwilliamigloria

RHS Plant Profile
Clanwilliam albuca

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Alpine Rockery Bulbs

A summer-dormant bulb with narrow, grass-like green leaves. In early spring, it bears a flower spike of hanging yellow flowers with a green base

Position

Full sun

Soil Types

Sand

Max Height

1-1.5 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
2–5 years
Max Spread
0.5-1 metres
Max Height
1-1.5 metres

Growing Conditions

Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
East–facing or North–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)
H4

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Asparagaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Tufted
Potentially harmful
Humans/Pets: Harmful if eatenskin irritant
Genus
Albuca are bulbous perennials with linear or narrowly lance-shaped leaves and loose racemes of yellow or white flowers, with three spreading tepals and three forming a tube, each often marked with green or brown on the reverse
Name Status
Correct
Plant Range
South African Cape

How to Grow

Cultivation

Grow in soil with very good drainage in full sun, outside in mild areas but with winter protection elsewhere

Propagation

Propagate by seed as soon as ripe or remove offsets when the plant is dormant

Suggested planting locations and garden types

  • Gravel garden
  • Rock garden
  • Conservatory and greenhouse

Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free