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Encyclopaedia of trees- Choosing shrubs and trees
- Ash-leaved Maple, Box Elder (Acer negundo)
Ash-leaved Maple, Box Elder (Acer negundo)
The Ash-leaved Maple is a neutral medium-sized tree, 10-15m tall with a head measuring 5-10m in diameter. It frequently has several stems. The head of older specimens is flatter. The Ash-leaved Maple grows very rapidly and has feathery leaves.
Leaves
Feathered, 3-5 sometimes 7 leaflets, 15.0-20.0cm long, 15.0-20.0cm wide, green above, pale green below. Leaves turn yellow or orange in autumn.
Flowers
Flowering period III-IV, red male flower, yellowish female flower. Diecious cymes, flowers appear before the leaves, with the female flowers in pendent clusters.
Fruits
Yellow-white schizocarp, 2.5-3.5cm long, remain on the tree until spring, usually blind in our region.
Bark
Dark grey or grey-green bark, fissured lengthwise with deep furrows or the bark may be thick and hard. Branches are bluish-white or green with banded surface.
Photos
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Types of damage
Application
Pioneer tree, tip afforestation, stabilization of shores and river banks, hillside stabilization, bird protection, public greens, parklands, urban areas, roadside verges, pedestrian precincts, backyards, private parks, gardens
Native regions
Western North America, Eastern North America
Location parameters
Light: full sun to slightly shady, temperature: warm to cool, soil: dry to wet, soil structure: firm to loose, soil depth: shallow to deep, soil quality: low to high, pH value: 5.0 to 7.5
Demands
Sun to slight shade, sprawling asymmetric growth in extremely shady locations; tolerant of heat, frost-hardy; moderately dry to wet, tolerates flooding; acid to weak alkaline; undemanding and adaptable; tolerant of urban climates
Growth
Height of growth: 10m to 15m, width of growth: 5m to 10m, rapid growth potential, growth habit: wide, irregular, upright, overhanging, often multi-stem.
Leaves
Feathered, 3-5 sometimes 7 leaflets, 15.0-20.0cm long, 15.0-20.0cm wide, green above, pale green below. Leaves turn yellow or orange in autumn.
Flowers
Flowering period III-IV, red male flower, yellowish female flower. Diecious cymes, flowers appear before the leaves, with the female flowers in pendent clusters.
Fruits
Yellow-white schizocarp, 2.5-3.5cm long, remain on the tree until spring, usually blind in our region.
Bark
Dark grey or grey-green bark, fissured lengthwise with deep furrows or the bark may be thick and hard. Branches are bluish-white or green with banded surface.
Roots
Surface rooter, takes root easily, fairly robust