Bigleaf Magnolia holds a record that matters in botanical terms: the largest simple leaves and largest flowers of any tree indigenous to North America. The leaves run up to 3 feet long and a foot wide, green above and silvery-gray and pubescent below, arranged in whorls that give the crown a tropical, almost theatrical quality. The flowers, creamy white with rose-purple at the petal bases, measure 8 to 14 inches across. André Michaux first described the species in 1789 after encountering it in Charlotte, North Carolina, though William Bartram had reportedly noted it in Alabama more than a decade earlier. In the wild it is rare, scattered through rich river valleys and ravines in the southeastern United States in small, isolated populations.

In the garden, Bigleaf Magnolia is rewarding but particular. It needs moist, organically rich, well-drained loam, and a sheltered location is not optional but essential, since strong winds shred those magnificent leaves quickly and leave the tree looking ragged for the rest of the season. It may take 12 or more years to flower for the first time. The red cone-like fruits attract butterflies and ripen to red in late summer, releasing red-coated seeds on slender threads. Fall brings a significant leaf drop, which is the main maintenance commitment. For gardeners who can give it space, protection, and patience, it is one of the genuinely irreplaceable native trees.