Wisteria macrostachya is a woody

Woody plant

A woody plant is a plant that uses wood as its structural tissue. These are typically perennial plants whose stems and larger roots are reinforced with wood produced adjacent to the vascular tissues. The main stem, larger branches, and roots of these plants are usually covered by a layer of...

 deciduous

Deciduous

Deciduous means "falling off at maturity" or "tending to fall off", and is typically used in reference to trees or shrubs that lose their leaves seasonally, and to the shedding of other plant structures such as petals after flowering or fruit when ripe...

 vine

Vine

A vine in the narrowest sense is the grapevine , but more generally it can refer to any plant with a growth habit of trailing or scandent, that is to say climbing, stems or runners...

 found in the southeastern United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

, including its namesake state of Kentucky

Kentucky

The Commonwealth of Kentucky is a state located in the East Central United States of America. As classified by the United States Census Bureau, Kentucky is a Southern state, more specifically in the East South Central region. Kentucky is one of four U.S. states constituted as a commonwealth...

. It is very similar to the American Wisteria

American Wisteria

Wisteria frutescens is a woody, deciduous, perennial climbing vine of the Fabaceae family. It is native to the wet forests and stream banks of the southeastern United States, with a range stretching from the states of Virginia to Texas and extending southeast through Florida.American Wisteria can...

 (Wisteria frutescens) with some references treating it as part of that species.

Kentucky Wisteria bears unscented bluish-purple flowers in racemes 15-30 cm long, a generally average length for the Wisteria

Wisteria

Wisteria is a genus of flowering plants in the pea family, Fabaceae, that includes ten species of woody climbing vines native to the eastern United States and to China, Korea, and Japan. Aquarists refer to the species Hygrophila difformis, in the family Acanthaceae, as Water Wisteria...

family. It produces these flowers after growing only two to three years, making it the quickest wisteria to bloom. Otherwise, its soil and light requirements, behavior, and characteristics are identical to the American Wisteria

American Wisteria

Wisteria frutescens is a woody, deciduous, perennial climbing vine of the Fabaceae family. It is native to the wet forests and stream banks of the southeastern United States, with a range stretching from the states of Virginia to Texas and extending southeast through Florida.American Wisteria can...

.