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Herbaceous Perennial

Primula Sweetheart (mixed) (Pr/Prim)

primrose [Sweetheart]

A collection of perennial primroses with rosettes of evergreen leaves, and flowers with frilly petals in shades from creamy yellow to rose pink.

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Ultimate height

0.1–0.5 metres

Time to ultimate height

1–2 years

Ultimate spread

0.1–0.5 metres

Chalk

Clay

Loam

Moisture

Moist but well–drained

pH

Acid, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

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)

Botanical details

Family: Primulaceae
Native to GB / Ireland: No
Foliage: Evergreen
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: Trade
Horticultural Group: Primrose group primulas are mainly grown as herbaceous perennials, and produce clusters of flowers on individual stems from the basal rosettes, although a few may also have umbel-like flowers. They are either spring-flowering, if grown without protection, or winter- to spring-flowering, if grown as biennial container plants in greenhouses or indoors.

How to grow

Cultivation

Grow in deep, humus-rich, moist soil. Partial shade is ideal, but will tolerate full sun if the soil is kept moist. See primula cultivation

Propagation

Propagate by division between autumn and early spring

Suggested planting locations and garden types

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

Pruning

Deadhead to promote flowering

Pests

May be susceptible to aphids, glasshouse red spider mite, glasshouse leafhopper and vine weevil. Slugs and snails may cause damage to leaves

Diseases

May be susceptible to grey mould, primula brown core (root rot) and virus diseases

Get involved

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