Buxus sinica var. insularis 'Justin Brouwers'

RHS Plant Profile

Korean boxwood 'Justin Brouwers'

Synonyms

Buxus 'Brouwers' Seedling'

Shrubs

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A compact, evergreen shrub up to 60cm in height, with small, lush, dark green glossy leaves. Responds well to pruning if creating a small hedge but if left unpruned, will create a rounded habit

Position

Full shade, Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 10–20 years
Max Spread: 0.1-0.5 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 shade Full sun Partial shade

Aspect: East–facing or North–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): H6

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Buxaceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Bushy
Potentially harmful: Harmful if eaten. Wear gloves and other protective equipment when handling
Genus: Buxus can be evergreen shrubs or small trees, with simple, leathery, opposite leaves and clusters of small, pale yellow flowers followed by pale green to brown fruits
Name Status: Unresolved

How to Grow

Cultivation

Grows best in well-drained soil in partial shade; can be scorched by sun and strong winds in dry soils. Susceptible to a number of box problems, see box cultivation

Propagation

Propagate from semi-ripe cuttings in summer

Suggested planting locations and garden types

Architectural
City and courtyard gardens
Cottage and informal garden
Patio and container plants
Hedging and screens

Pruning

Pruning group 8 in summer, renovation pruning can be carried out in late spring. Use mulch and a general fertiliser after hard pruning, ideal for topiary clipping

Pests

May be susceptible to box tree caterpillar, box sucker, mussel scale and red spider mite

Diseases

May be susceptible to a leaf spot, box blight and, rarely, honey fungus