Red horsechestnut is a hybrid between Aesculus hippocastanum and Aesculus pavia, almost certainly originating in Europe around 1812. The species epithet carnea — meaning flesh-colored or deep pink — names the tree's chief attraction: showy upright panicles of pink or red flowers that cover the canopy in late spring. Growing 30 to 40 feet tall, the tree starts with a pyramidal shape in youth before maturing into a dense, rounded form over five to seven years. Unlike many hybrids, this one comes reliably true from seed. Its foliage holds better through summer than that of common horsechestnut, and disease resistance is generally improved as well.

Moist, acidic, fertile soil gives the best results, though average soil with good drainage is adequate. The large taproot makes it very difficult to transplant once established, so position it carefully on the first attempt. Seed pods can be messy and are worth considering before siting near paths or patios. A large lawn, park, or parkway median gives it the context to perform: the canopy becomes genuinely impressive, and the late-spring flower display in the right light is hard to overlook. Pruning should be light, as sudden bark exposure can cause cracking.