The most important part of the kava plant is its root system. Kava roots are long, slender, and fibrous, often reaching depths of several feet into the soil. These roots contain the Family: Amaranthaceae (amaranth and goosefoot family): Go Botany Fraser's photinia (Photinia x fraseri 'Little Red Robin') botanikfoto Picture Library Plant and garden photography My First Plant Book 25 Planter Ideas: Welcoming Front Gardens & Porches 16 Yellow Perennials Walters Gardens, Inc.