Skimmia japonica 'Red Diamonds' (f)

RHS Plant Profile

Japanese skimmia 'Red Diamonds

Synonyms

Skimmia 'Red Diamonds'

Shrubs

A compact evergreen shrub to 80cm high, with elliptic, leathery green leaves that are aromatic when crushed. Clusters of fragrant small white flowers open from deep red buds in spring, and if pollinated, these are followed by bright red berries in autumn that persist well into winter

Position

Full shade, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

Time to Maturity: 5–10 years
Max Spread: 0.5-1 metres
Max Height: 0.5-1 metres

Growing Conditions

Chalk Clay Loam Sand

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

Position

Full shade 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): H5

Colour & Scent

Fragrance Flower Foliage

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Rutaceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Bushy
Potentially harmful: Fruit are ornamentalnot to be eaten. Wear gloves and other protective equipment when handling. Pets: Fruit are ornamentalnot to be eaten - see the HTA guide to potentially harmful plants for further information and useful contact numbers
Genus: Skimmia are compact evergreen shrubs with simple, aromatic leaves and terminal panicles of small white or yellowish flowers followed, on fertilised female plants, by shiny red berries; most have male and female flowers on separate plants
Name Status: Unresolved

How to Grow

Cultivation

Grow in moderately fertile, moist but well drained soil, in light to full shade; prefers acidic to neutral soils but will tolerate alkaline soils where there is plenty of humus. Plants may become chlorotic on poor, dry soil or in too much sun. This cultivar produces female flowers, plant a male cultivar nearby to ensure pollination and berries

Propagation

Propagate by semi-ripe cuttings in late summer

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) if necessary

Pests

May be susceptible to scale insects, and to vine weevil when grown in containers

Diseases

May be susceptible to Phytophthora and honey fungus