When mature, this plant will reach heights in excess of 50 feet to grace the garden with its oval shape. Use yellow buckeye as a shade tree. Showy yellow flowers are produced at the tip of each branch in a 6-inch panicle. It flowers in May after the leaves emerge. Fall color ranges from yellow to orangish-brown. This lesser known and grown buckeye deserves broader use in our landscape; it is the best large buckeye.