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Plant Encyclopedia

Magnolia obovata

Magnolia obovata (Japanese bigleaf magnolia, "Honoki")

Japanese name: ホオノキ (朴木、厚朴)
Scientific name: Magnolia obovata

Magnolia obovata

[Overview]
A deciduous tree found in the mountains; large ones reach 30 m in height and 1 m in trunk diameter.
The leaves are simple and alternate, clustered at the branch tips, obovate to oblong, 20–40 cm long and 10–25 cm wide, narrowing to a wedge-shaped base, with a shortly protruding, pointed tip.
The underside is whitish and sparsely hairy.
The leaf margins are entire and slightly wavy.
The leaf stalk is 2–4 cm long.
A stipule scar encircles the branch at the base of the leaf stalk.
The leaves turn yellow in autumn.
The flowers are solitary, facing upward at the branch tips, white, about 15 cm across, and fragrant.
The fruit is a follicle, oblong and 10–15 cm long; it splits open when ripe, and red seeds hang from white threadlike tissue.

[Uses]
The leaves have long been used to serve food on, as in hoba-miso.
The wood is used for furniture and crafted items.
The bark is used medicinally.

[Cultivation]
Propagate from seed or by grafting.
Plants grown from seed can take 10 years or more to flower.
It prefers sunny, well-drained, fertile sites with deep soil.
The leaves are large and easily damaged by wind, so avoid places exposed to strong wind.
It grows large, so it needs sufficient space.
Transplanting mature trees is difficult.
Pests and diseases are relatively few, but scale insects and longhorn beetles can occur.

Details

Names
English: Japanese bigleaf magnolia, Japanese whitebark magnolia
Japanese: ホオノキ(朴木、厚朴)
Life form
Tree
Evergreen / deciduous
Deciduous
Leaf type
Broadleaf
Habit
Terrestrial
Flowering season
May, June
Fruiting season
October, November
Distribution or origin
Japan (Hokkaido to Kyushu), southern Kuril Islands
Growth form
Upright
Height
30000 mm
Leaf shape
Simple leaf (unlobed)
Leaf arrangement
Alternate
Leaf margin
Entire
Inflorescence
Solitary
Flower color
White
Flower diameter
150
Fruit color
Red, Orange
Leaf color
Yellow, Green
Availability of seeds and plants
Low
Form sold
Seedlings
Propagation
Seed, Grafting
Sun exposure
Full sun
Water needs
Moderate
Soil needs
Required
Tolerance
Cold tolerance
Suitable uses
Parks and gardens
Hardiness zone
5a–9b
Pests
Scale insects, Longhorn beetles
Uses
Medicinal, Other crafts
Japanese culture
Used since ancient times for serving food
Designated plants
Endemic to Japan
Japan Flower Trade Code
19420

Translated from our Japanese encyclopedia. If anything differs, the Japanese page is correct.

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