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These vigorous growers are beautiful additions to the garden. They vary from tall, stately plants suitable for borders to others that can be planted as creeping groundcovers. Flowers, too, vary from tight spikes of 1/2 inch to 1-inch cups carried alone or in whorls. Humus-rich, moisture-retentive soil is recommended; some varieties enjoy wet soil and ample water. Several sorts may become invasive and need to be corralled.
Note: These are not the invasive purple loosestrife, which has been banned in many parts of the United States.
Part Sun, Sun
Under 6 inches to 8 feet
1-2 feet wide or indefinite