Grow it for its almost non-stop purple flowers spring through fall. Buy plants at nurseries spring through fall, and year-round in mild climates. Plant in the spring in a sunny spot with well-drained soil. Add a light application of organic fertilizer to the planting hole. Remove the plants from the containers by knocking them loose and sliding them out.
Place plants three feet apart.
Water the plant weekly throughout its first summer. It grows well in full sun in zones 5 to 8 of the U.S.D.A. Plant Hardiness Zone Map. This plant needs to be replaced every three years or it will die out. Inc. How things get done. Use of this Web site constitutes acceptance of the eHow Terms of Use and Privacy .