EVERGREEN

Plant Encyclopedia

Magnolia grandiflora

Magnolia grandiflora (Southern magnolia, "Taisanboku")

Japanese name: タイサンボク (泰山木)
Scientific name: Magnolia grandiflora

Magnolia grandiflora

[Overview]
An evergreen tree growing over 20 m tall.
Thick branches spread out horizontally.
The leaves are simple and alternate, oblong, 10–23 cm long and 4–10 cm wide, thick and leathery.
The upper surface of the leaf is dark green and glossy, and the underside is densely covered with fine brown hairs.
The leaf margins curve back toward the underside and are entire.
The petiole is 2–3 cm.
The flowers are borne singly at the branch tips, facing upward, about 15–25 cm across, white and fragrant.
There is no distinction between sepals and corolla, and there are 9 thick tepals in 3 whorls of 3.
The fruit is an oblong follicle 8–12 cm long, which splits open when ripe to release red seeds.

[History]
It was introduced to Japan in the Meiji period.

[Uses]
The buds and leaves are used medicinally.

[Cultivation]
Propagate from seed or by cuttings.
It prefers a sunny, well-drained, fertile place with deep soil.
Because it grows large, it is not suited to pots and needs plenty of space.
Transplanting a mature tree is difficult.
Rainfall is sufficient for watering.
Apply slow-release fertilizer three times: in early summer before flowering, in autumn, and as fertilizer in winter.
Because it has few branches, do not prune; only thin out branches, but if pruning is done, do it as soon as possible after flowering.
Pests and diseases are relatively few, but scale insects and longhorn beetles occur.

Details

Names
English: Southern magnolia, bull bay, loblolly magnolia
Japanese: タイサンボク(泰山木)
Life form
Tree
Evergreen / deciduous
Evergreen
Leaf type
Broadleaf
Habit
Terrestrial
Planting (or sowing) season
March, April
Flowering season
June, July
Fruiting season
September, October
Distribution or origin
Southeastern United States
Growth form
Upright
Height
20000 mm
Leaf shape
Simple leaf (unlobed)
Leaf arrangement
Alternate
Leaf margin
Entire
Inflorescence
Solitary
Number of petals
9
Flower color
White
Flower diameter
150–250
Fruit color
Red, Orange
Leaf color
Green
Availability of seeds and plants
Low
Form sold
Seeds, Seedlings
Propagation
Seed, Cuttings
Sun exposure
Full sun
Water needs
Moderate
Soil needs
Required
Tolerance
Cold tolerance, Heat tolerance
Suitable uses
Parks and gardens
Pests
Scale insects, Longhorn beetles
Uses
Medicinal
Japan Flower Trade Code
19410

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

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