There are numerous varieties of vinca plants, including species that grow up to 18 inches tall and others that trail like a vine. The flowers can range from pink to periwinkle blue to white, and while they may be different in some aspects, vinca varieties do have some things in common: the flowers are always single, meaning they don't have double petals; they are a no-fuss plant to grow; and when it comes to transplanting and putting them in the ground, the process is the same for all of them.
Transplant your vinca on a cloudy, cool day to help prevent root shock. Select a site that has good drainage and receives full sun. If you live in a climate that is extremely hot, then the vinca might benefit from some afternoon shade.
Dig a hole for the vinca that is the same size as the root ball. Plant it in the ground at the same depth it was in in the pot, or in its previous location if moving the plant. If transplanting more than one plant, space them eight inches apart. Set vinca vines 12 to 14 inches apart.
Fill the excess soil in around the roots. Firm the soil around the root ball.
Water the soil at least two inches deep. When watering, do not put water on the plant's foliage, but water it at soil level, next to the stem.
Set a one inch layer of wood chip mulch over the planting site.