Mt Cuba Center
Mt Cuba Center
Back to trial Phlox for Sun

Trial Garden

Phlox paniculata ‘Delta Snow’

5 Photos


Phlox paniculata ‘Delta Snow’ hails from Mississippi where it originated as an old pass-along plant, a term used for plants that were loved so much that neighbors freely shared them with one another. Part of the longstanding appeal of this cultivar is its exceptional resistance to powdery mildew. In fact ‘Delta Snow’ has been recognized as one of the most disease resistant cultivars in several trial programs throughout the United States. Although its claim to fame is disease resistance, ‘Delta Snow’ also produces an incredible number of large inflorescences with white flowers accentuated by a bright lavender center. The weight of all the flowers did cause the stems to slightly angle outward; however, it wasn’t severe enough to reduce the plants overall appearance.



  • Rating
  • Common Name
    Delta Snow garden phlox  
  • Bloom Period
    early July—late August 
  • Peak Bloom
  • Size
    48” x 40” 
  • Fragrance
  • Powdery Mildew Resistance