Dwarf, also known as Missouri Primrose, this is a brilliant, long blooming, yellow beauty. Evening primrose has been used in alternative medicine in the treatment of heart disease, high cholesterol, circulation problems, premenstrual syndrome, endometriosis, breast pain, certain symptoms of menopause, eczema, psoriasis, acne, osteoporosis, and multiple sclerosis. Wonderful for naturalizing areas, at least 6 hours of sun per day. May spread if not attended to.