Mt. Cuba Center Research Report - Phlox for the Mid-Atlantic Region Mt. Cuba Center Phlox for the Mid-Atlantic Region - Page 3

SUN PHLOX Phlox paniculata Garden phlox (Phlox paniculata) is the most popular species of phlox used in today’s landscapes. In fact, of the 94 different types of sun-loving phlox in our trial, 66 are selections and hybrids of P. paniculata. Throughout the trial, each selection was evaluated for floral display, foliage quality, habit, and powdery mildew resistance. Garden phlox did prove challenging to grow in our trial garden due to powdery mildew infections that were exacerbated by having so many plants in one location. However, several cultivars excelled despite this challenge. The following are the 10 best selections of Phlox paniculata for the mid-Atlantic garden. Phlox paniculata 'Jeana' ««««« Phlox paniculata 'Jeana’ is, without a doubt, the best-performing phlox from the trial. This cultivar was discovered growing along the Harpeth River near Nashville, Tennessee and named after its discoverer, Jeana Prewitt. Although there were many plants of Phlox paniculata in the area, 'Jeana' in particular stood out for its exceptionally mildew-free foliage. This trait carries through to the garden and is one of the main reasons 'Jeana' performed so well in the trial. This 5' tall beauty also produces an impressive floral display in midsummer. Interestingly, the individual flowers, or pips, are much smaller than any other garden phlox. However, that does not deter the butterflies that feed on its nectar. In fact, we found 'Jeana' attracted more butterflies than any other garden phlox in the entire trial. With a top rank in both horticultural and ecological evaluations, Phlox paniculata 'Jeana' is hard to beat. Phlox paniculata 'Glamour Girl' ««««« Phlox paniculata 'Glamour Girl' is a medium height cultivar (3’ tall) with stunning coral-pink flowers in midsummer. The large blooms begin in early July and last for nearly six weeks. In addition to its gorgeous flowers, 'Glamour Girl' also stands out for its vigorous and lush habit. Some powdery mildew was observed throughout the trial; however, it was never severe and did not cause much actual damage to the leaves. In a garden without hundreds of other phlox plants 'Glamour Girl' would likely be exceptionally clean. mtcubacenter.org 3