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Trial Garden

Coreopsis ‘Sweet Marmalade’

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Summary

Coreopsis ‘Sweet Marmalade’ has flowers that start out dark peach and fade lighter as they age. We also trialed two other, nearly identical, cultivars: ‘Sienna Sunset’ and ‘Novcorcar’ (Crème Caramel). All three were selected as sports of C. ‘Crème Brulee’ so they share a similarly poor habit, propensity for powdery mildew and are not reliably winter hardy. All five plants of ‘Sweet Marmalade’ failed to overwinter the first year and were replanted the following spring. Three of those replacements were lost over the second winter, and the two plants that did survive were small and weak. ‘Sweet Marmalade’ is sometimes seen as a cultivar of Coreopsis verticillata. This is inaccurate because its parent plant, C. ‘Crème Brulee’, is not a cultivar of C. verticillata, but rather a hybrid, likely between C. rosea and C. grandiflora.


Details

  • Rating
    2.9 
  • Common Name
    ‘Sweet Marmalade’ tickseed  
  • Bloom Period
    late June – early September 
  • Flower Size
    1.5” diameter 
  • Size
    12” x 26” (h x w) 
  • Weeks in Bloom
    10 
  • Disease Resistance
    Prone to powdery mildew