Primula russeola (Cy)

Alpine Rockery Herbaceous Perennial

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A clump-forming, evergreen alpine perennial with fleshy green leaves, furry around the edges and with a deep midrib. Umbels of violet flowers appear from mid-spring until summer

Position

Full sun, Partial shade

Soil Types

Clay, Loam, Sand

Size

Time to Maturity: 2–5 years

Growing Conditions

Clay Loam Sand

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

Position

Full sun Partial shade

Aspect: East–facing or South–facing or West–facing
Exposure: Exposed or 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): H6

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Primulaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Clump forming
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: Correct
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: Crystallophlomis primulas form long, narrow, upright leaves with several flower stems per plant carrying one to three whorls of pink, purple, white or cream flowers
Plant Range: China, Tibet

How to Grow

Cultivation

Grow in partial shade in deep, humus-rich, moist, neutral to acid soil. Will tolerate sun if soil is kept moist

Propagation

Propagate by seed sown in containers in a cold frame as soon as ripe, or divide established clumps in early spring

Suggested planting locations and garden types

Cottage and informal garden
Rock garden
Low Maintenance
Banks and slopes
Ground cover

Pruning

Cut back flower stems when flowers have faded

Pests

May be susceptible to aphids, red spider mites, leafhoppers, slugs and vine weevil

Diseases

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