Magnolia Sieboldii is a species of Magnolia native to east Asia in China, Japan, and Korea. It is a large shrub or small tree 5-10 m tall tree. The flowers, unlike the better-known spring flowering Magnolias, open primarily in the early summer, but continue intermittently until late summer. Growing Details: Common Name: Sieboldii Genus: Magnolia Species: Sieboldii Skill Level: Beginner Exposure: Full sun, Partial shade Hardiness: Hardy Soil type: Well-drained/light, Acidic, Chalky/alkaline Height: 4-8m Spread: 4-8m Description: Magnolia have large, showy, often fragrant flowers, often opening before the leaves, and sometimes followed by colourful cone-like fruit. Grow in moist, well-drained preferably neutral to acidic soil in sun or part shade. Tolerates dry, alkaline soil. This shrub is deciduous.