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Seiju Magnolia

Magnolia acuminata 'Seiju'

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Seiju Magnolia (Magnolia acuminata 'Seiju') at Lakeshore Garden Centres

Seiju Magnolia flowers

Seiju Magnolia flowers

(Photo courtesy of NetPS Plant Finder)

Height:  50 feet

Spread:  40 feet

Sunlight:  full sun  partial shade 

Hardiness Zone:  4a

Other Names:  Blue Magnolia, Cucumber Magnolia

Description:

A tall, spreading tree with large, coarse leaves; powder blue buds open to blue-green flowers that mature to yellow over time; large growing, best used for larger properties and parks

Ornamental Features

Seiju Magnolia has fragrant yellow cup-shaped flowers held atop the branches in mid spring, which emerge from distinctive powder blue flower buds, and which are interesting on close inspection. It has dark green deciduous foliage. The large pointy leaves turn coppery-bronze in fall.

Landscape Attributes

Seiju Magnolia is a deciduous tree with a distinctive and refined pyramidal form. Its relatively coarse texture can be used to stand it apart from other landscape plants with finer foliage.

This is a relatively low maintenance tree, and is best pruned in late winter once the threat of extreme cold has passed. Deer don't particularly care for this plant and will usually leave it alone in favor of tastier treats. It has no significant negative characteristics.

Seiju Magnolia is recommended for the following landscape applications;

  • Shade

Planting & Growing

Seiju Magnolia will grow to be about 50 feet tall at maturity, with a spread of 40 feet. It has a low canopy with a typical clearance of 5 feet from the ground, and should not be planted underneath power lines. It grows at a medium rate, and under ideal conditions can be expected to live for 80 years or more.

This tree does best in full sun to partial shade. It requires an evenly moist well-drained soil for optimal growth, but will die in standing water. It is not particular as to soil type, but has a definite preference for acidic soils. It is quite intolerant of urban pollution, therefore inner city or urban streetside plantings are best avoided. Consider applying a thick mulch around the root zone in winter to protect it in exposed locations or colder microclimates. This is a selection of a native North American species.

This plant is not reliably hardy in our region, and certain restrictions may apply; contact the store for more information.

 
 
Hardiness Zone Plant Height Minimum Sunlight Soil pH Preference
Characteristics
Shade 
Applications
Flowers  Texture 
Ornamental Features