This is a spectacular tree, native in the southern united states in scattered and small populations. Under cultivation it survives to Zone 4, though it is an uncommon tree. There is one planted at the Berg's as well as at Gordon and Mary's. It is a smallish tree with a very attractive habit and the blossoms are deliciously fragrant and reminds me of sweet peas. The most incredible thing about the Yellowwood is that it only blooms every two (or in some cases every four) years. This year, both trees are blooming which makes me wonder if all the trees bloom in the same years?