Acer negundo var. violaceum

RHS Plant Profile
box elder

Other common names

ash-leaved maple

Synonyms

Acer negundo 'Violaceum'

Award of Garden Merit
Trees

A medium-sized, bushy-headed, deciduous tree. Young shoots are a purple colour and are covered in a white bloom. Leaves, comprised of 5-7 leaflets, emerge bronze-green becoming greener as they mature. In spring, male plants bear prominent pink-purple, tassel-like flowers

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

8-12 metres

Max Spread

4-8 metres

Size

Time to Maturity
10–20 years
Max Spread
4-8 metres
Max Height
8-12 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
West–facing or East–facing or South–facing or North–facing
Exposure
Sheltered
Hardiness
H6

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Sapindaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Columnar upright
Genus
Acer can be deciduous trees or large shrubs with paired, often palmately-lobed leaves and small flowers followed by characteristic winged fruits. Many have fine autumn colour, and some have ornamental stems
Name Status
Correct
Plant Range
N USA

How to Grow

Cultivation

Grow in a moist but well-drained soil

Propagation

Propagate by seed or grafting

Suggested planting locations and garden types

  • Architectural
  • Cottage and informal garden
  • Low Maintenance

Pruning

Pruning group 1

Pests

May be susceptible to Acer gall mite, aphids, caterpillars and horse chestnut scale

Diseases

May be susceptible to Verticillium wilt, Acer leaf scorch and honey fungus