Berberis thunbergii 'Diabolic'

RHS Plant Profile

Japanese barberry 'Diabolic'

RHS

Synonyms

Berberis thunbergii 'Diabolicum'

Shrubs

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A compact, bushy, spiny shrub to around 50cm tall and wide. Arching stems bear small, rounded yellow-to yellow-green leaves edged with red when young; leaves turn orange-yellow in autumn. Small yellow flowers in spring are followed by red fruits in autumn

Position

Full sun, 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 or Well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun Partial shade

Aspect: North–facing or West–facing or East–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): H7

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Berberidaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Bushy
Potentially harmful: Fruit are ornamental - not to be eaten. Wear gloves and other protective equipment when handling. Pets: Fruit are ornamental - not to be eaten - see the HTA guide to potentially harmful plants for further information and useful contact numbers
Genus: Berberis can be deciduous or evergreen shrubs with spiny shoots bearing simple, often spine-toothed leaves, and small yellow or orange flowers in axillary clusters or racemes, followed by small berries
Name Status: Unresolved

How to Grow

Cultivation

Tolerant of a range of soils and locations, but grows best in any well drained soil in full sun or partial shade, though flowering and fruiting are best in full sun. See berberis cultivation for further advice

Propagation

Propagate by softwood cuttings or semi-hardwood cuttings in summer

Suggested planting locations and garden types

Coastal
City and courtyard gardens
Cottage and informal garden
Patio and container plants
Wildlife gardens
Flower borders and beds
Garden edging
Hedging and screens

Pruning

Pruning group 2; trim hedges after flowering

Pests

May be susceptible to aphids and berberis sawfly

Diseases

May be susceptible to powdery mildews and sometimes by honey fungus