Primula auricula 'Snowstorm' (Au/S)

RHS

Alpine Rockery Conservatory Greenhouse

'Snowstorm' is an evergreen, perennial, show auricula up to 20cm tall, with rosettes of mealy, grey-green leaves. Clusters of grey-green, mealy flowers with black feathering, white centres and yellow eyes are produced on short stems in spring

Position

Full sun, Partial shade

Soil Types

Loam

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

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

Growing Conditions

Loam

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

Position

Full sun Partial shade

Aspect: West–facing or East–facing or South–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): H5

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Primulaceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Clump forming
Potentially harmful: Skin allergen. Wear gloves and other protective equipment when handling
Genus: Primula are herbaceous or semi-evergreen perennials, forming a basal rosette of simple leaves, with salver-shaped or bell-shaped flowers which may be solitary or carried in an umbel or in whorls on an erect stem
Name Status: Unresolved
Horticultural Group

Horticultural Classification Codes

Horticultural Classification Codes are often given to genera which have a large number of species or cultivars. They are used to categorise cultivated plants based on specific, shared characteristics such as shape, colour, size or flowering time, and can be displayed as letters or numbers

For example:
Dahlia ‘Sunset Kate (Sin) = Single flower
Rosa ‘Marigold’ (HT) = Hybrid Tea: Show Auricula group primulas have a distinct pure white circle in the centre of each flower. They can be single-coloured, edged with black feathering out to the margins, or fancy (edged with coloured feathering).

How to Grow

Cultivation

Show auriculas are best grown in pots in an alpine house or cold frame, in a mix of equal parts loam-based potting compost, leaf mould, peat or peat-substitute, and grit.

Propagation

Propagate by division or by detaching offsets in autumn or early spring

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Patio and container plants
Rock garden
Conservatory and greenhouse
Flower borders and beds
Garden edging

Pruning

No pruning required but deadhead after flowering, and remove dead or damaged leaves as necessary

Pests

May be susceptible to aphids, glasshouse red spider mite, slugs, leafhoppers and vine weevils

Diseases

May be susceptible to a virus, primula brown core and grey moulds