Red Stem Thalia has incredibly impressive leaves are oval to elliptical in shape with brilliant red stems growing up to 10’ tall. This specimen thrives in full sun and can be planted to a depth of up to 36” of water once mature. An exceptional plant of interest in large ponds, lakes and the largest of streams. Flowers from summer into fall with delicate purple flowers and black seeds in thin stems that stand several feet above the foliage. Overwinters Zone 9-11.