How to Grow Annual Vinca (Madagascar Periwinkle
Annual vinca (Catharanthus roseus) is a tropical perennial that is grown as an annual in most regions. It has flowers and foliage that resemble impatiens, but rather than being a shade lover, annual vinca is a perfect choice for sunny locations. Also known as Madagascar periwinkle, these aren't the newest or flashiest annual flowers on the gardening scene, but recent cultivar developments warrant a closer examination of this common bedding plant. Horticulturists have been hard at work cultivating new colors in plants with showy flowers that are easy to start from seed. In a plant that was already reliably drought-tolerant and pest-free, what more could you ask? Plant vinca seedlings after the last frost date in your region.