MEDICINAL:
Periwinkle made into a tea or salve for external use treats skin problems such as dermatitis, eczema, and acne. Its powerful astringent action make it useful for a couple to use, vaginally as a douche and as a penis soak, in treating vaginal infections.
GROWING:
Periwinkle is a perennial plant that spreads by putting out runners, and is mostly used as a ground cover in partial to full shade. It prefers moist, well-drained soils.