Scientific Name:
Acer negundo
Pronunciation:
AY-sur ne-GOON-do
Common Name:
Manitoba maple, box elder
Family Name:
Sapindaceae
Plant Type:
Tree - deciduous
Key ID Features:
Leaves opposite, compound, odd-pinnate with 3(-5) leaflets obovate-elliptic, 12cm long x 6cm wide, margins toothed or lobed; female florets in pendant clusters, dioecious, greenish-yellow, male florets with dark red anthers; schizocarps 2-4cm wide, thick edge of wings at wings at 20-60 degree angle, samaras 2.5-3.5cm long, thin-winged. Winter ID: buds green, pubescent, 1-3mm long; persistent fruit.
Habit:
Upright
Form:
Round
Texture:
Medium
Mature Height:
10 - 15m
Mature Spread:
7 - 10m
Growth Rate:
Moderate
Origin:
Garden origin, North America
Hardiness Rating:
Zone 2: (-46 to -40 °C)
Exposure:
Full sun, Part sun/part shade
Soil/Growing Medium:
Well-drained
Landscape Uses:
Street (boulevard tree)
Additional Info:
Google. Cultivar shown: A. 'Variegatum'
Leaf Morphology:
Form:
Compound
Arrangement:
Opposite
Texture/Venation:
Soft flexible
Surfaces:
Glabrous
Compound Leaf:
Odd-pinnate
Colour in Fall:
Yellow
Shapes:
Obovate
Apices:
Acute
Bases:
Attenuate
Margins:
Dentate, Entire, Serrate
Inflorescence Type:
Raceme
Flower Morphology:
Dioecious plant
Number Of Petals:
0
Ovary Position:
Superior
Colour (petals):
Not showy, Green-yellow
Flower Time at Peak:
Apr, May
Additional Info:
Pendulous
Fruit Type:
Samara, Schizocarp
Fruit Colour:
Brown
Fruiting Time:
Sep, Oct
Additional Info:
Persistent, Schizocarps split into samara-like mericarps after dispersal
Bark Morphology:
Plated, Lightly fissured
Bark or Stem Colour:
Grey, Brown
Leaf Bud Type:
Ovoid
Leaf Scar Shape:
Crescent shaped
Maintenance:
Low
Pest Susceptibility:
Anthracnose, Canker or sap rot, Mildew, Stem borer insects (Drought tolerant)
Specific Pests:
Course(s):
- HORT 1155
- Level 2 Apprenticeship
Location(s):
- (WDH) Wark-Dumais House : 194, 220 cv. Variegatum