Is being replaced  by S. lancifolia in Louisiana where there is salt water intrusion into wetlands.  Apparently much less salt tolerant that S. lancifolia. Use in water gardens or as an emergent along pond edges.

In central Florida, lanceleaf has a relatively short blooming period compared to Leavenworth's tickseed - wrapping things up by mid-summer, whereas C. Leavenworthii is still flowering come Fall. Coreopsis is the state wildflower. Wildflower beds, butterfly gardens or meadows.