(Valeriana officinalis) Perennial. (Also known as Garden Heliotrope) Delicate-looking, low growing plants give rise to 4-foot, charming clusters of tiny pale pink flowers June- September; very attractive in borders or herb gardens. Extracted fragrance of the flowers was used in perfumes in the Renaissance. Valerian was touted for its medicinal properties for centuries, and modern research has confirmed its value. The root has been the part most used, having been recommended as a pain relieve..