Easily grown in average, dry to medium, well-drained soils in full sun. Prefers moist, humusy soils with good drainage, but also performs well in gravelly or sandy soils. Tolerates drought. Plants may repeat bloom throughout the summer, but need regular moisture to encourage this. Plants may spread somewhat rapidly in optimum growing conditions. Remove spent flower spikes to help extend the bloom period. Plants like cool night temperatures (best performance is north of USDA Zone 7). Plants may become somewhat floppy and open up as the summer progresses, particularly in hot and humid climates. If plants flop or otherwise depreciate in summer to the point where they look unsightly, consider cutting them back to the basal foliage. In any event, cut plants back after flowering has concluded.
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