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Back to trial Coreopsis

Trial Garden

Coreopsis verticillata

5 Photos


Coreopsis verticillata has lacy, fine-textured foliage topped with yellow flowers in early summer. Unlike its cultivars ‘Zagreb’ and ‘Golden Gain’, C. verticillata has a habit that is open and airy throughout. The heights of the stems are also staggered so that the flowers bloom at varying levels. This does slightly diminish the floral display, but the undulating top-line creates a natural type of aesthetic. Denser cultivars like ‘Zagreb’ and ‘Golden Gain’ were often prone to mild powdery mildew infections, but the airiness of the habit of the straight species helps it remain disease free. Coreopsis verticillata is a rhizomatous species that spreads about 1’ over three years.


  • Rating
  • Common Name
    whorled tickseed  
  • Bloom Period
    mid-June – mid-July 
  • Flower Size
    1.5” diameter 
  • Size
    28” x 40” (h x w) 
  • Weeks in Bloom:
  • Disease Resistance
    No disease observed