Mt Cuba Center
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Carex barrattii
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Trial Garden

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

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Mt. Cuba conserves and stewards more than 1,000 acres including meadows, forests, streams and riparian corridors.

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Mt Cuba Center
Back to trial Phlox for Sun

Trial Garden

Phlox × arendsii ‘Susanne’

4 Photos


This cultivar is thought to be a hybrid between Phlox paniculata and Phlox divaricata. However much like Phlox × arendsii ‘Babyface’, it is nearly identical to other compact selections of Phlox paniculata and shares no resemblance to the shade-loving woodland phlox. However, unlike ‘Babyface’, ‘Susanne’ performed very poorly in our trial. It was plagued by powdery mildew and four out of five plants completely failed to bloom. We only assign floral ratings when at least two plants start blooming in order to avoid outliers in performance. Because of this, ‘Susanne’ did not receive a floral rating and thus its total average score is significantly reduced.


  • Rating
  • Common Name
    Susanne Arend’s phlox  
  • Bloom Period
    Not Eligible for Rating 
  • Peak Bloom
    Not Eligible for Rating 
  • Size
    32”x 30” 
  • Fragrance
    Not Evaluated 
  • Powdery Mildew Resistance