2 Sweetbay Magnolia Trees Live – 2 Feet Tall Magnolia Shrubs with Fragrant White Flowers for Outdoor Planting Flowers: Creamy white, fragrant flowers that bloom from late spring to summer Size: Mature height ranges from 10-35 feet, depending on the cultivar and growing conditions Light: Prefers full sun to partial shade Zones: Hardy in USDA zones 5-9.