Product name Kudzu Root extract Part used: the root of Kudzu Specification : 5:1 10:1 20:1 20-98Flavonoidsor as customer's requirements Appearance : yellowish-brown Powder Sources Kudzu (also called Japanese arrowroot) is a group of plants in the genus Pueraria, in the pea family Fabaceae, subfamily Faboideae. They are climbing, coiling, and trailing perennial vines native to much of eastern Asia, Southeast Asia, and some Pacific islands.