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This taxon, together with A. ×mississippiensis Sarg., is a naturally occurring hybrid with A. glabra and A. pavia as the parent species. Such hybrids typically have yellow, pink or red flowers (different coloured flowers can occur within the same inflorescence) with exserted stamens, petals of unequal size with glandular margins, and capsules with an irregularly spiny surface. They form small, low-spreading trees to 8–10 m tall. The morphology is rather variable and depends on the exact parentage of the hybrid. F1 hybrids are intermediate, but backcrossing of hybrids with either of the parental species results in a variety of forms that are more similar to that parent. Hardin 1957b, Wright 1985. Distribution USA: Alabama, Arkansas, Louisiana, Mississippi, Missouri, Oklahoma, Texas. Habitat As for the parent species. USDA Hardiness Zone 7. Conservation status Not evaluated. Illustration NT118. Cross-reference K118. Taxonomic note The differences between A. ×bushii and A. ×missis sippiensis are uncertain and the names may be synonymous.
Aesculus bushii is quite widely cultivated and freely available in commerce. It forms a small tree (9 m at Kew, 9.7 m at the Hillier Gardens, TROBI) and is noted for its multi-coloured inflorescences: the flowers start yellow and fade through pink to red.