Alstroemeria 'Purple Rain'

RHS Plant Profile

Peruvian lily 'Purple Rain'

RHS

Herbaceous Perennial

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Clump-forming perennial with mid-green leafy stems to 70cm, carrying terminal clusters of very large, reddish-purple flowers, the upper inner petals marked with yellow towards the base and speckled dark brown, flowering in summer and autumn

Position

Full sun, Partial shade

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
pH: Acid or Alkaline or Neutral

Position

Full sun Partial shade

Aspect: West–facing or South–facing or East–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: Alstroemeriaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Clump forming
Potentially harmful: Skin allergen. Wear gloves and other protective equipment when handling
Genus: Alstroemeria are fleshy rooted herbaceous perennials forming spreading clumps of erect stems bearing narrowly lance-shaped leaves, with umbels of showy funnel-shaped flowers in summer
Name Status: Unresolved

How to Grow

Cultivation

Grow in fertile, moist but well-drained soils in full sun or partial shade. Young plants are best left undisturbed to form clumps; use a dry mulch for the first two winters. See Alstroemeria cultivation

Propagation

Propagate by division in autumn or very early spring

Suggested planting locations and garden types

Cottage and informal garden
City and courtyard gardens
Patio and container plants
Wildlife gardens
Flower borders and beds
Cut flowers
Underplanting of roses and shrubs

Pruning

Pull up spent flowered stems, leaving tubers in ground

Pests

May be susceptible to slugs

Diseases

Generally disease-free but may be susceptible to a virus