27 Types of Palm Trees for a Tropical Feel in Your Garden 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 16 Yellow Perennials Walters Gardens, Inc. Decoris Set of 3 Fibreclay Outdoor Plant Pots Diameter 19 38 cm Woven Look Beige : Amazon.com.be: Garden Introduce Your Kids to Gardening with 7 Unusual Plants Homestead Gardens, Inc.