Magnolia obovata (Whitebark Magnolia, Japanese Bigleaf Magnolia)


Botanical Information

FamilyMagnoliaceae
GenusMagnolia
Speciesobovata
SynonymsMagnolia hypoleuca
CategoryWoody
TypeTree (deciduous)
OriginNative to Japan. The genus Magnolia is named after Pierre Magnol, a French botanist who lived from 1638 to 1715.
Pronunciation

Details

USDA Hardiness Zone6
USDA Hardiness Ref.
Canadian Hardiness Zone5a - 6a
Canada Hardiness Ref.
RHS Hardiness ZoneH6
RHS Hardiness Ref.
Temperature (°C)-23 -(-18)
Temperature (°F)-10 - 0
Height12 - 20 m
Spread5 - 10 m
GrowthMedium
Flowering PeriodMay, June

Description and Growing Information

ShapeBroadly pyramidal.
PropagationBy seed or softwood cuttings.
CultivationGrows in well-drained, moist soil in full sun to partial shade.
PestsHorse chestnut scale, snails and capsid bug.
Notable SpecimensThe A. M. Cuddy Gardens, Strathroy, Ontario, Canada, Westonbirt, The National Arboretum, Tetbury, Gloucestershire, England.
Leaf DescriptionThe leaves are large, obovate, 16-38 cm long and 90-20 cm broad, leathery, green above, silvery or greyish pubescent below, and with an acute apex. They are held in whorls of five to eight at the end of each shoot.
Flower DescriptionThe flowers are also large, cup-shaped, 15-20 cm diameter, with 9-12 creamy, fleshy tepals, red stamens; they have a strong scent, and are produced in early summer after the leaves expand.
Fruit DescriptionThe fruit is an oblong-cylindric aggregate of follicles 12-20 cm long and 6 cm broad, bright pinkish red, each follicle containing one or two black seeds with a fleshy orange-red coating.

Photographs