Best grown in moist, organically rich, well-drained loams in full sun to part shade. Generally intolerant of soil extremes (dry or wet). Intolerant of most urban pollutants. Flowers may be injured by late spring frosts. St. Louis is on the northern edge of the growing range for this magnolia, so consider planting it in a location protected from winter winds. May take 6-7 years before first blooms appear.