Buxus sempervirens 'Rotundifolia'

RHS Plant Profile

box 'Rotundifolia'

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Other common names

small-leaved box 'Rotundifolia'

Synonyms

Buxus 'Rotundifolia'
Buxus microphylla 'Rotundifolia'

Shrubs Trees

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A dense, multistemmed, evergreen tree or shrub to around 200cm with a dense, oval habit, neat, ovate bright green foliage turning to darker green in winter, and smooth grey bark. More vigorous then your standard box, its fine-textured foliage makes it an ideal option for shaping into 'umbrella' trees for areas in a garden where privacy is required

Position

Full shade, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

1-1.5 metres

Max Spread

1-1.5 metres

Size

Time to Maturity: 5–10 years
Max Spread: 1-1.5 metres
Max Height: 1-1.5 metres

Growing Conditions

Chalk Clay Loam Sand

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

Position

Full shade 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, Columnar upright
Potentially harmful: Pets (dogs): Harmful if eaten For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
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: Accepted

How to Grow

Cultivation

Grow in any fertile, well-drained soil. Prefers light shade, full sun may result in dull or scorched foliage in dry soils. Water regularly while establishing. See box cultivation for more detailed advice

Propagation

Propagate by semi-hardwood cuttings in summer

Suggested planting locations and garden types

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

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