Gymnocladus dioicus
Kentucky Coffeetree
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Kentucky Coffeetree (Gymnocladus dioicus) - Description
The Kentucky Coffeetree, Gymnocladus dioicus, is a tree in the subfamily Caesalpinioideae of the pea family Fabaceae, native to the midwest of North America. The seed may be roasted and used as a substitute for coffee beans; however, unroasted pods and seeds are toxic. The wood from the tree is used by cabinetmakers and carpenters. From 1976 to 1994 the Kentucky coffeetree was the state tree of Kentucky, after which the tulip poplar was returned to that designation.
Kentucky Coffeetree (Gymnocladus dioicus) - Blooming
Female trees will produce fragrant flowers and also seed pods, which while they may look attractive with a winter backdrop are quite messy.
Kentucky Coffeetree (Gymnocladus dioicus) - Growth
Grow in open sunny areas. They tolerate drought and frost. Leaves sprout later than most trees in the spring, so do not panic. In fact, the name Gymnocladus refers to the amount of time this tree has "naked branches".
Kentucky Coffeetree (Gymnocladus dioicus) - Planting
Nick the seed coat with a file or knife before planting. Sow in containers in fall and leave outside. Cultivars should be grown from root cuttings done in winter.
Kentucky Coffeetree (Gymnocladus dioicus) - Pest
Uncommon.
Kentucky Coffeetree (Gymnocladus dioicus) - Interesting facts
While the seeds of the tree were once used as a poor substitute for coffee, this is discouraged as they are toxic in large quantities.
Kentucky Coffeetree (Gymnocladus dioicus) - Soil and irrigation
Grows best in humusy, moist soil, but does poorly in heavy clays. Tolerates drought and occasional wetness. Adapts to urban conditions and a soil pH of 6 to 8.
