Learn how to grow alternanthera Purple Prince in your garden. Alternanthera Purple Prince is a popular ornamental plant that is often used as a ground cover. It has a purple-red flower and green leaves. It can be grown in zones 8-10 of the US Department of Agriculture Plant Hardiness Zone Map. In order to grow this plant, you will need: - A sunny spot with well drained soil - A container or area with at least six hours of sun exposure per day - Potting soil Alternanthera Purple Prince is a popular houseplant that can be grown in just about any environment.