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Herbaceous Perennial

Primula sieboldii 'Musashino' (Co)

Siebold primrose 'Musashino'

A compact, rosette-forming, deciduous woodland perennial with pale green, wrinkled foliage and clusters of flat, pale-pink flowers with a darker pink reverse, appearing in April to May

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Ultimate height

0.1–0.5 metres

Time to ultimate height

2–5 years

Ultimate spread

0.1–0.5 metres

Clay

Loam

Moisture

Moist but well–drained

pH

Acid, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Partial shade

Aspect

East–facing or North–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)

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: Accepted
Horticultural Group: Cortusoides section primulas are woodland perennials with long-stalked, rounded, lobed and hairy leaves, and usually rosy-pink flowers in a single umbel

How to grow

Cultivation

Grow in partial shade, in deep humus-rich, moist, neutral to acid loam soil; tolerates full sun if the soil remains moist at all times

Propagation

Propagate by division in autumn

Suggested planting locations and garden types

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

Pruning

Tidy plant after flowering and remove diseased or damaged leaves

Pests

May be susceptible to aphids, leafhoppers, vine weevil and slugs

Diseases

May be susceptible to a virus, grey mould (botrytis) or primula brown core

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