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Scientific Name:
Magnolia sieboldii
Pronunciation:
mag-NO-lee-uh SEE-bold-ee-eye
Common Name:
Oyama magnolia
Family Name:
Magnoliaceae
Plant Type:
Tree - deciduous
Key ID Features:
Leaves ovate, dark green, grayish beneath, flowers nodding, 6-9(-12) tepals, white with pink to crimson stamens, cup-shaped, fragrant, most 7-10cm wide, fruit aggregate pink-red before turning brown as the follicles open to reveal their single orange-red seed. s. Winter ID: habit spreading, vase shaped, buds opposite, boat shaped, felty; lenticels whitish.

Habit:
Spreading
Form:
Vase
Texture:
Coarse
Mature Height:
7 - 10m
Mature Spread:
10 - 15m
Growth Rate:
Moderate
Origin:
S.E. Asia / Japan / China
Hardiness Rating:
Zone 6: (-23 to -18 °C)
Exposure:
Full sun only if soil kept moist, Part sun/part shade
Soil/Growing Medium:
Humus rich, Well-drained
Landscape Uses:
Fall interest, Small garden/space, Specimen plant, Spring interest, Street (boulevard tree), Woodland margin
Additional Info:

Leaf Morphology:
Form:
Simple
Arrangement:
Alternate
Texture/Venation:
Leathery, Pinnate venation
Surfaces:
Glabrous
Colour in Summer:
Dark-green
Colour in Fall:
Yellow
Shapes:
Obovate, Ovate
Apices:
Obtuse
Bases:
Cordate, Rounded
Margins:
Entire
Additional Info:
Spectacular fall colour

Inflorescence Type:
Flowers solitary
Flower Morphology:
Flowers perfect
Number Of Petals:
10
Corolla Shape:
Rotate/stellate
Ovary Position:
Superior
Colour (petals):
Showy, White (pink stamens)
Flower Scent:
Fragrant
Flower Time at Peak:
May, Jun, Jul, Aug
Additional Info:
Many simple pistils

Fruit Type:
Aggregate fruit, Follicle
Fruit Colour:
Pink, Red, Brown (eventually releasing some orange seed before dropping)
Fruiting Time:
Sep, Oct
Additional Info:
Showy,

Bark Morphology:
Multi-stem trunk
Bark or Stem Colour:
Olive, Tan
Leaf Bud Type:
Conical (long-pointed), Valvate
Leaf Scar Shape:
Crescent shaped
Propagation:
Seed, Cuttings, Layering, Eye (leaf bud) cuttings
Maintenance:
Medium
Pest Susceptibility:
(Pest resistant, Disease resistant)

Course(s):
  • HORT 2355
Location(s):
  • (ONW)  Overpass North side West : 842
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