Answer: Gaillardia are sturdy perennials and need full sun to grow their best. They also require a well drained soil and will die out over the winter in too wet of a location. The seed heads or "balls" can be removed to stimulate additional blooming over a very long season. You may remove them one by one or trim the entire plant back by about half periodically. In the late fall, remove the frost killed tops and mulch around but not over top of the plants. The plants seem to benefit from regular division each spring to help keep them vigorous. They may also self sow.
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