Red Sister Cordyline also widely known as the Hawaiian ti plant, is a tropical perennial shrub that thrives outdoors in USDA hardiness zones 10 and 11 and indoors as a house plant under mild temperatures and bright, indirect light. Grown mostly as an ornamental, it is famous for its distinctive burgundy pink and bronze-green foliage. However, Red Sister does flower in mid-summer, throwing pale- to medium-pink hued flowers.