Oyama Magnolia: Nodding White Flowers with Rose-Red Stamens

Magnolia sieboldii (Oyama Magnolia)

This spreading, deciduous shrub grows 15–25 feet tall and blooms in late spring to late summer with white fragrant blossoms. Site where the slightly nodding flowers with rich rose-red stamens can be seen from below. In warmer climates, prefers partial shade with a cool root zone.

Growing Conditions & Care

Grow in moist, well-drained, preferably acidic to neutral soil in sun or partial shade; magnolias do not tolerate wet feet. Flower buds are susceptible to late frosts; shelter large-leaved species from wind. Prune in late winter or late summer to prevent sap bleeding; prune minimally.

Propagation

Sow seeds in autumn or stratify. Root softwood cuttings in early summer. Can be layered in early spring, grafted in winter, or propagated by bud in summer.

Common Problems

Bacterial leaf spot, spot anthracnose, canker, dieback, butt rot, powdery mildew, anthracnose, fungal spots, weevils, snails, scale insects, thrips, planthoppers.

Quick Reference

• Height: 15–30 ft.
• Spread: 15–30 ft.
• Growth Habit: Clumps
• Growth Pace: Moderate
• Light: Full Sun to Part Shade
• Moisture: Medium
• Maintenance: Low
• Bloom Time: Spring, Summer
• Flower Color: Red, White
• Uses: Beds and Borders, Flowering Tree, Naturalizing, Specimen Plant/Focal Point, Waterside
• Style: Formal Garden, Woodland Garden
• Type: Shrubs