Star magnolia (Magnolia stellata ‘Royal Star’)

Star magnolia

Features and Characteristics

Magnolia stellata, commonly called star magnolia, is native to Japan. It is a small deciduous tree that typically grows 15-20’ tall with a spreading, rounded crown. It is also often grown as a large oval to rounded shrub. It is noted for its compact size and late winter to early spring bloom of star-shaped white flowers. Each flower typically has 12-18 narrow strap-like tepals.

Magnolia stellata is synonymous with Magnolia kobus var. stellata.

Genus name honors Pierre Magnol, French botanist (1638-171- .

Specific epithet is in reference to the star-like shape of the flower.

‘Royal Star’ is a popular cultivar that has slightly larger and showier flowers than the species. Fragrant white flowers (3-4” diameter), each with 25-30 tepals.

Care and Maintenance

Best grown in moist, organically rich, well-drained loams in full sun to part shade. Best flowering in full sun. Appreciates consistent and even moisture in summer. Generally intolerant of soil extremes (dry or wet). Intolerant of most urban pollutants. Best sited in locations protected from high winds, but generally avoid southern exposures where the buds may be induced to open too early in late winter. Mulch (compost or bark) helps retain soil moisture. Prune only if needed immediately after flowering.

‘Royal Star’ blooms about 2 weeks later than the species is accordingly less susceptible to frost problems.

Star magnolia (Magnolia stellata ‘Royal Star’) Requirements

Hardiness zone	4 - 8
Sun light	Full sun to part shade
Water	Medium
Maintenance	Medium

Common Problems

No serious insect or disease problems. Frost damage to flowers in spring is a concern.

Uses

Beautiful specimen flowering tree or shrub for lawns, foundations, shrub borders or woodland peripheries. May be grown as a tall informal hedge.

Star magnolia (Magnolia stellata ‘Royal Star’) Details

Common name	Star magnolia
Botanical name	Magnolia stellata 'Royal Star'
Plant type	Tree
Family	Magnoliaceae
Hardiness zone	4 - 8
Water	Medium
Maintenance	Medium
Flower color	White
Flowering period	March
Height	10 - 20 ft.
Width	8 - 15 ft.