Nerine undulata (Flexuosa Group) 'Alba'

RHS Plant Profile

nerine 'Alba'

Synonyms

Nerine flexuosa 'Alba', Nerine undulata 'Alba'

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A perennial bulb producing white, lily-like flowers in small clusters at the end of stout stems in late autumn. The petals have wavy edges and are curved outwards. Narrow, strap-shaped leaves follow the flowers

Position

Full sun

Soil Types

Chalk, Clay, 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

Chalk Clay Loam Sand

Moisture: Moist but well–drained or 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): H3

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Amaryllidaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Clump forming
Potentially harmful: Ornamental bulbs - not to be eaten. Wear gloves and other protective equipment when handling. Pets: Ornamental bulbs - not to be eaten - see the HTA guide to potentially harmful plants for further information and useful contact numbers
Genus: Nerine are summer-dormant, perennial bulbs with erect leafless stems each bearing a terminal umbel of funnel-shaped flowers in autumn, and strap-shaped or linear leaves appearing after the flowers
Name Status: Accepted

How to Grow

Cultivation

Plant in early spring in a moderately fertile, well-drained soil. Protect in colder areas with a deep, dry mulch over winter or grow in containers in a frost-free greenhouse. See also nerine cultivation

Propagation

Propagate by division after flowering or by bulb chipping. Propagation by seed is possible with some nerines, but may be difficult as the seeds are very fleshy, don't store well and plants grown from seed can take up to 7 years to flower. See bulb propagation for further advice

Suggested planting locations and garden types

City and courtyard gardens
Coastal
Cottage and informal garden
Gravel garden
Patio and container plants
Mediterranean climate plants
Cut flowers
Flower borders and beds
Wall side borders

Pruning

No pruning required

Pests

May be susceptible to slugs

Diseases

Generally disease-free