Magnolia 'Susan'Magnolia x soulangeana Description Perfect for small gardens, Magnolia 'Susan' is a slow growing deciduous shrub or small tree with fragrant reddish purple flowers in mid to late spring. Narrow goblet shaped, the blossoms, up to 5 in. across (12 cm), count 6 slightly twisted tepals, purple red on the outside and paler inside. Features: Height: 18 ft Spread: 20 ft Sunlight: full sun, partial shade Hardiness Zone: 5 9