Coreopsis verticillata/Threadleaf Coreopsis

Of the many types of corepsis, verticillata is the most  popular for the garden - with yellow or gold flowers and feathery leaves.  The light-yellow cultivar 'Moonbean' was voted Perennial of the Year in 1992. In zones 6 and 7, cultivars perform better than the species.  Other popular cultivars are ‘Rosea' and ‘Zagreb', both gold-flowered and even more drought-tolerant than 'Moonbeam.'

Photo Credit.

Details

• Hardy to Zones 3-9.
• Blooms June -October.
• Long-lived, reblooms without deadheading (removing the dead flowers). Does not self-seed.
• Full sun.
  

Care

• Shearing off dead blooms creates a late-summer rebloom.  Then don't prune again.
• Drought-tolerant.
• Don't fertilize - it makes coreopsis grow to be too tall and actually have less flowering.
• Mulch 'Moonbean' for the winter.

Good Information in Print

• The Well Tended Perennial Garden by Tracy DiSabato-Aust is the best-selling book on how to make your perennials healthier and better-looking.
• Encyclopedia of Perennials by Graham Rice is exhaustive and an outstanding general resource on the subject.
• The Complete Flower Gardener by Cutler and Ellis is another source I consult regularly.

 

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all content and photos are © Susan Harris unless specified otherwise