Scientific Name:
Acer palmatum
Dissectum Atropurpureum Group
Pronunciation:
AY-sur pal-MAY-tum
Common Name:
dissected red Japanese maple
Family Name:
Sapindaceae
Plant Type:
Shrub - deciduous
Key ID Features:
Slow-growing shrub, broadly arching; leaves opposite, blades orbicular, about 10cm wide, lobes with very deep sinuses or palmately compound, most with 7 linear and incised-lobed leaflets, deep purple, turning bright red or orange in fall. Winter ID: low, weeping form, buds ovoid, have light brown hairs on a papery sheath that extends halfway up.
Habit:
Arching
Form:
Weeping
Texture:
Medium - fine
Mature Height:
1.3 - 2.0m
Mature Spread:
2 - 3m
Growth Rate:
Slow
Origin:
Garden origin, S.E. Asia / Japan / China
Hardiness Rating:
Zone 5: (-29 to -23 °C)
Exposure:
Full sun only if soil kept moist, Part sun/part shade, Filtered shade
Soil/Growing Medium:
Acidic, Well-drained
Landscape Uses:
Container planting, Fall interest, Small garden/space, Specimen plant, Summer interest
Additional Info:
Leaf Morphology:
Form:
Simple, Lobed, Dissected, Compound
Arrangement:
Opposite
Texture/Venation:
Soft flexible, Palmate venation
Surfaces:
Glabrous
Colour in Summer:
Purple, Dark-red
Colour in Fall:
Orange, Red
Shapes:
Linear, Orbicular
Apices:
Acute
Bases:
Attenuate
Margins:
Incised, Pinnately lobed
Additional Info:
Spectacular fall colour, 7 to 11 lobes which are deeply dissected (simple leaves) or completely separate leaflets (compound leaves)
Inflorescence Type:
Cyme
Flower Morphology:
Flowers perfect
Number Of Petals:
5
Corolla Shape:
Rotate/stellate
Ovary Position:
Superior
Colour (petals):
Not showy, Red
Flower Scent:
None
Flower Time at Peak:
Apr
Additional Info:
Rarely noticed as colour matched foliage
Fruit Type:
Samara, Schizocarp
Fruit Colour:
Red
Fruiting Time:
Jul, Aug
Additional Info:
Not showy, Schizocarps split into samara-like mericarps after dispersal
Bark Morphology:
Lightly fissured
Bark or Stem Colour:
Brown
Leaf Bud Type:
Ovoid
Leaf Scar Shape:
Crescent shaped
Pest Susceptibility:
Anthracnose, Beetles or weevils, Canker or sap rot, Caterpillar or cutworm, Fungal leaf spot, Mildew, Mites, Scale insects, Stem borer insects, Wilt (Pest resistant, Disease resistant, Deer resistant, Rabbit resistant)
Course(s):
- not used (on campus)
Location(s):
- (GAZ) GAZebo
- (GAZE) GAZebo East : q.1
- (HPZ) Horticulture PlaZa : cv. Shojo Shidare
- (ONE) Overpass North side East : under Chitalpa - cv. ?
- (PPL) Pine PLanting