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Carex barrattii
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Mt. Cuba Center evaluates native plants and related cultivars for horticultural and ecological value.

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Mt Cuba Center
Back to trial Phlox for Sun

Trial Garden

Phlox carolina

4 Photos


It is difficult to make comparisons between Phlox carolina and the other selections of this species in our trial because this accession behaved so differently. Taxonomically, Phlox carolina has been used as a catch-all for plants that don’t easily key out to other species of phlox, and as a result, P. carolina now encompasses a lot of disparate characteristics, both in habit and bloom time. This particular accession bloomed extremely late compared to the other Carolina phlox selections and had lanceolate leaves of a moderate width. Unfortunately, the plants were quite floppy which greatly reduced their rating. Powdery mildew was not observed, but leaf spot was problematic, particularly during the third year of the trial.


  • Rating
  • Common Name
    Carolina phlox  
  • Bloom Period
    late July—late August 
  • Peak Bloom
  • Size
    30” x 30” 
  • Fragrance
    None Observed 
  • Powdery Mildew Resistance