Even though several plants performed well the first year, they did not over-winter. These could be treated as annuals and still be valuable additions to the landscape if replaced every year. This plant was very showy, reaching approximately three feet tall and two feet wide, and was completely covered with blooms. However, these three varieties of boltonia did produce seedlings to replace the mother plant. Several perennials were slow starters, becoming more established the second year.
Some perennials are invasive and others require pruning.
Even so, this perennial should not be introduced to native wetland areas. For full sun perennial or mixed borders for landscapes in the southeastern United States, plants with high ratings in this study are well qualified. Many of these perennials appear to tolerate a full sun environment, to require little care, and still to perform well. Gardeners and growers should try plants in several locations to determine suitability for a particular area. Detailed information on the results of this study is available in Circular 323, 1996-1997 Herbaceous Perennial Trial Garden Results, available from the Office of Research Information, Room 2, Comer Hall, Auburn University, AL, 36849.