Scientific Name:
Acer platanoides
'Crimson King'
Pronunciation:
AY-sur pla-tan-OY-dees
Common Name:
Crimson King Norway maple
Family Name:
Sapindaceae
Plant Type:
Tree - deciduous
Key ID Features:
Leaves dark red to nearly black, opposite, palmate with 5 long-pointed lobes (reminiscent of the Canadian flag leaf except with more elongated and pointy teeth), blades reniform-orbicular, most 2-16cm long x 11-18cm wide, petioles 15-20cm long, broken leaf veins or petiole ooze milky sap; schizocarps 7-9cm wide, thick edge of wings at wings at 110-130 degree angle (widely divergent wings - unlike sycamore maple), samaras 4-5cm long, seeds flattened, ~1cm wide. Winter ID: buds opposite, 2-3mm long, terminal buds 5-6mm long, plump green to burgundy; leaf scars 3-lobed with 3 widely spaced leaf scars; fruit may be present.
Habit:
Upright
Form:
Round
Texture:
Coarse
Mature Height:
22 - 30m
Mature Spread:
10 - 15m
Growth Rate:
Fast
Origin:
Europe, Garden origin
Hardiness Rating:
Zone 3: (-40 to -34 °C)
Exposure:
Full sun, Part sun/part shade
Soil/Growing Medium:
Humus rich, Well-drained
Landscape Uses:
Street (boulevard tree)
Additional Info:
Leaf Morphology:
Form:
Simple, Lobed
Arrangement:
Opposite
Texture/Venation:
Soft flexible, Palmate venation
Surfaces:
Glabrous
Colour in Summer:
Purple, Dark-red, Nearly Black, dark purple when mature
Colour in Fall:
Purple, Red
Shapes:
Ovate
Apices:
Acuminate
Bases:
Hastate
Margins:
Dentate, Pinnately lobed
Inflorescence Type:
Corymb
Flower Morphology:
Number Of Petals:
5
Corolla Shape:
Rotate/stellate
Ovary Position:
Superior
Colour (petals):
Yellow, Red (sepals red-tinged)
Flower Time at Peak:
Apr, May
Fruit Type:
Samara, Schizocarp
Fruit Colour:
Dark-red
Fruiting Time:
May, Jun, Jul
Additional Info:
Schizocarps split into samara-like mericarps after dispersal
Bark or Stem Colour:
Leaf Bud Type:
Ovoid
Leaf Scar Shape:
Crescent shaped
Organ Modifications:
Fibrous-like roots
Pest Susceptibility:
Aphids or adelgids, Canker or sap rot, Caterpillar or cutworm, Mildew, Wilt (Drought tolerant)
Specific Pests:
