Acer opalus

RHS Plant Profile
Italian maple
Italian maple visionspictures.com

Other common names

French maple

Synonyms

Acer italum
Acer opulifolium

Trees

A deciduous tree, to 25m or more in its native range, though often smaller in cultivation. Leaves are broad, shallowly 5-lobed, slightly glossy green, and often downy on the undersides. Clusters of small yellow flowers appear before the leaves in early spring, followed by winged seeds that are sometimes tinted silvery pink. Leaves turn yellow and rusty orange in autumn

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

Higher than 12 metres

Max Spread

wider than 8 metres

Size

Time to Maturity
20–50 years
Max Spread
wider than 8 metres
Max Height
Higher than 12 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
East–facing or South–facing or West–facing
Exposure
Exposed or 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, Spreading branched
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

How to Grow

Cultivation

Grow in moisture-retentive, well-drained soil in sun or part shade

Propagation

Propagate by seed in autumn or spring, or by softwood cuttings in summer

Suggested planting locations and garden types

  • Architectural
  • Low Maintenance

Pruning

Minimal pruning required; see pruning group 1. Prune from late autumn to mid-winter only

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