Primula auricula 'Helen Ruane' (Au/B) | auricula 'Helen Ruane'

RHS

Herbaceous Perennial

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A compact, rosette-forming, evergreen perennial with pale green, toothed foliage with a silvery coating, and fragrant, greenish-yellow flowers with powdery green edges and white centres, which appear in early spring

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

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

Chalk Clay Loam Sand

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

Position

Full sun Partial shade

Aspect: East–facing or North–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): H5

Colour & Scent

Fragrance Flower

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: Accepted
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: Border Auricula group primulas are generally robust garden plants and often very fragrant.

How to Grow

Cultivation

Grow in full sun or partial shade in moderately fertile, moist but well-drained, humus-rich soil. See Primula for further advice

Propagation

Propagate by division in autumn or after flowering

Suggested planting locations and garden types

Cottage and informal garden
Patio and container plants
Rock garden
Flower borders and beds

Pruning

No pruning required

Pests

May be susceptible to aphids, vine weevil, slugs, leaf and bud eelworms, leaf-mining flies and glasshouse red spider mite

Diseases

May be susceptible to primula leaf spot, primula brown core and grey moulds