Plant periwinkle as a ground cover in a shady flowerbed. Dig holes as deep as the periwinkle's root balls and twice as wide. Space the holes about 6 to 8 inches apart. Place the periwinkle plants into the holes and fill the holes with soil.
Use periwinkle in a garden box or a container set in a shady or partially shady location in your garden. Periwinkle does best in a protected location. The vines from the periwinkle will hang over the side of the box or container.
Set periwinkle transplants around the base of trees or shrubs. They will grow well around the base of the tree or shrubs and give your garden a forest feel.
Plant the periwinkle on the sides of slopes to keep the soil from eroding.