The Ohio buckeye produces green-yellow candles of flower in the western boundary.
An American native, Aesculus glabra var. arguta has panicles of green-cream, four-petalled flowers, and stamens which protrude beyond the petals. It produces one to three brown seeds held in fleshy, prickly or warty seed cases. The palmate leaves bear seven or nine smooth, slender leaflets which have a tapered point. A native of the south east and central United States, it occurs on limestone slopes and sandy, open woodlands, and is tolerant of drier conditions. It usually grows to 10m in height, but can reach double this. It is one of an estimated 15 species of Aesculus, which have a natural distribution of North America, eastern Asia and Europe. Members of the genus have large, sticky buds; deciduous, opposite, palmate leaves; terminal panicles of flower; and smooth, warty or spiky seed capsules. Many are grown in gardens for their ornamental value.