This is widely planted and escaped across southeastern states. In Ky. it has escaped from some rural gardens in the south, but it has spread little in northern urban areas. It has often been confused with frutescens or macrostachya, especially without flowers or fruits (W): legume and ovary velvety pubescent (versus glabrous); pedicels ca. 15-20 mm long (versus 5-15 mm); standard reflexed at the base (versus near middle); seeds lenticular (versus reniform). In contrast to the native wisterias, leaflets of both sinensis and floribunda tend to be strongly acuminate (versus acute to slightly acuminate), undulate along margins (versus plane), thinner, and usually less hairy (with appressed whitish hairs). Wisterias flower mostly during May in Ky., but cf. sinensis has been recently been observed to start as early as 6 Apr 2024 in FAYE (L. Winter, pers. comm.)