Pieris japonica 'White Pearl'

RHS Plant Profile

pieris 'White Pearl'

Shrubs

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A compact, slow-growing evergreen shrub, to around 1.2m high in ten years, with a spreading habit and slightly glossy, lance-shaped green leaves. Free-flowering, with small, urn-shaped white flowers borne in upright clusters at the tips of the stems in spring

Position

Full sun, Partial shade

Soil Types

Loam, Sand

Max Height

1-1.5 metres

Max Spread

1-1.5 metres

Size

Time to Maturity: 10–20 years
Max Spread: 1-1.5 metres
Max Height: 1-1.5 metres

Growing Conditions

Loam Sand

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

Position

Full sun Partial shade

Aspect: East–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

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Ericaceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Bushy, Spreading branched
Potentially harmful: Harmful if eaten. Wear gloves and other protective equipment when handling. Pets (dogs, cats, rabbits, rodents, tortoises): Harmful if eaten - For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus: Pieris are compact evergreen shrubs with leathery, dark green leaves, often brightly coloured when young, and small white urn-shaped flowers borne in panicles in spring
Name Status: Unresolved

How to Grow

Cultivation

Grow in moderately fertile, moist but well drained, acid soil; will not tolerate chalk soils or waterlogging. Position in full sun or light shade, with protection from cold, drying winds, and mulch annually in autumn

Propagation

Propagate by softwood cuttings in early summer or semi-hardwood cuttings in late summer. Some bottom heat may be required

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Patio and container plants
Wildlife gardens
Low Maintenance
Flower borders and beds

Pruning

Minimal pruning required, see pruning group 8 (evergreens)

Pests

May be susceptible to pieris lacebug

Diseases

May be susceptible to honey fungus (rarely), Phytophthora root rot, and fungal leaf spot