Hawaiian Live Tropical Blue Ginger Dichorisandra Thyrsiflora Plant bulb Root 1 Pack. Root is 2"-4" long, blue ginger is a perennial herb, and can grow up to 3 feet high. Once grown, the leaves are spirally arranged and are green and shiny. The flowers are deep blue, almost purple with yellow anthers. These make a very beautiful ornamental flowering plant and is easy to grow. Grow in partial sun and shade and regular watering. Grow as an indoor plant, patio plant, outdoor plant or grow as landscaping. Great for gift giving. This is a perennial plant. Grow in partial sun with regular watering. Can grow in Usda Hardiness Zone 1,2,3,4,5,6,7,8,9,10,11,12