Cordylines are wonderful plants that can decorate the exterior or the interior of your home. They have long, strap leaves or sword-shaped leaves that grow from a single head. As plants age, they will form tree-like trunks with multiple heads and branch in a sculptural form. These plants can create a desert or even tropical feel in the garden. Some Cordylines have evolved in a tropical environment and can be grown outdoors only in warm gardens. Many of these are seen for sale as colorful houseplants.