Galtonia viridiflora

RHS Plant Profile

green-flowered galtonia

Synonyms

Galtonia candicans 'Viridiflora'
Ornithogalum viridiflorum

Bulbs

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A perennial to 1m in height, with arching stems bearing racemes of pale green flowers in late summer

Position

Full sun

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 2–5 years
Max Spread: 0.1-0.5 metres
Max Height: 0.5-1 metres

Growing Conditions

Chalk Clay Loam Sand

Moisture: Moist but well–drained or Well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun

Aspect: East–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): H3

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Asparagaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Tufted
Genus: Galtonia are bulbous perennials with erect strap-shaped leaves and erect stems carrying cone-shaped terminal racemes of nodding, bell-shaped white or green flowers
Name Status: Correct
Plant Range: South Africa Lesotho

How to Grow

Cultivation

Grow in fertile, well-drained soil that is reliably moist from spring to summer. In colder areas either lift and overwinter in a container in a cool dry site or protect with a deep winter mulch

Propagation

Propagate by seed, sown in pots in a cold frame when ripe or remove offsets in early spring

Suggested planting locations and garden types

Cottage and informal garden
Flower borders and beds

Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free