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Woody > Acer > Acer negundo > Acer negundo

Acer negundo


Box Elder or Manitoba Maple




Origin:  Western Canada.
            Mike's Opinion

this is Mike

"

A tree not worthy of planting for any reason, since if planted by the homeowner it will ensure a life of regret. Even the wood, rich in sap, is difficult to burn. Seen as a unkempt, broad spreading, weedy tree, that produces suckers and seeds in quantity at the slightest provocation. Thankfully often short lived.



Michael Pascoe, NDP., ODH., CLT., MSc. (Plant Conservation)

"

Family
Sapindaceae (Aceraceae)
Genus
Acer
Species
negundo
Category
Woody
Type
Tree (deciduous)
Pronunciation
USDA Hardiness Zone
3-9
Canadian Hardiness Zone
2
RHS Hardiness Zone
H7
Temperature (°C)
-40
Temperature (°F)
-45 - (-10)
Height
15 m
Spread
12-15 m
Photographs
Description and Growing Information
Flowering Period
April
General Description
A horrible, weedy, unkempt, weak wooded, nasty tree. My apologies to the western provinces where this tree is native and is grown as an ornamental.
Landscape
None, in fact it should not be used in the landscape in Ontario since the wood is very weak and limbs may come crashing down in winter storms. Cultivars may be accepted, as they are often slower growing and do not reach the size or breadth of the species.
Cultivation
Often a volunteer species in neglected fields, meadows and hedgerows where the soil is often rich.
Shape
Often broader than high; about 15 m.
Growth
Fast
ID Characteristic
Easily identifiable by its compound leaves, young twigs are covered in a blue bloom that when rubbed off reveals the smooth olive covered stems beneath. Foliage is bitterly aromatic when crushed.
Pests
Many minor infestations such as leaf miners, galling insects and aphids, unfortunately not any that affect the tree vigorously enough to ensure its demise.
Habitat
Plains of Western Canada.
Bark/Stem Description
Shallow fissured, grey to beige in colour.
Flower/Leaf Bud Description
Buds are about 5 mm long, two scaled and covered with silky hairs.
Leaf Description
Rich, almost shiny, light to medium dark green, leaves which are compound often with 7-9 leaflets to a leaf, leaves to 15 cm in length.
Flower Description
Flowers in dense clusters before the leaves emerge.
Fruit Description
Seeds held in large drooping clusters, often persisting into the winter months.
Colour Description
Pale yellow autumn colour not worthy of note.
Texture Description
Coarse, weedy textured plant.
Notable Specimens
None, but many large specimens throughout the province.
Propagation
Seed, 2-3 months at 4°C. For cultivars grafted on species rootstock.
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