'Baby Sun' Coreopsis (Coreopsis lanceolata 'Baby Sun') is a cultivar of the common wildflower Coreopsis. It blooms profusely throughout the summer, growing in clumps up to 18 inches wide and 20 inches tall. This is a wonderful plant for Ozarks gardens and especially good for deadheading to produce many more flowers. Note: Another common name is Tickseed.