Wheel Tree
Trochodendron aralioides
A slow, patient evergreen from East Asia whose wheel-like flowers and glossy whorled foliage reward gardeners willing to give it time and shelter.
Wheel Tree is a botanical rarity in Western gardens, the only surviving member of its ancient genus, an evergreen tree or large shrub from Japan, Korea, and Taiwan. In cultivation it grows 10 to 20 feet tall and wide, though in its native mountain forests it can reach 60 feet with a trunk diameter of up to 16 feet. The name comes from the Greek trochos for wheel and dendron for tree, describing the stamens of the spring flowers, which radiate outward in clusters like spokes. The glossy, leathery leaves arrange themselves in whorls around each terminal bud, giving the crown an almost tropical, umbrella-like silhouette. Zones 6 to 8.
Plant Wheel Tree in dappled shade or a site with some afternoon shade, in fertile, moist, well-drained loam, with shelter from strong winds. It tolerates brief flooding but will not survive prolonged drought. Growth is genuinely slow, and flowering may not begin for many years after planting, so patience is the essential requirement. Once established, it resents disturbance and should not be relocated. The greenish star-shaped flowers are botanically primitive, lacking petals entirely, which makes them a subject of interest for botanists and curious gardeners alike. This is a plant for a considered, long-view garden where rarity and quiet distinction matter more than quick effect.
Wheel Tree
Trochodendron aralioides