Phlox paniculata 'David' 

‘David’ is a great addition to those wanting that wild meadow or cottage garden look. Perfect along border fronts and flower beds or in pots and containers to liven up spaces in your yard. Expect lovely white color blooms from summer through to fall.

The 2002 Perennial Plant Association's Plant of the Year. Giant white flowers form on top of green, mildew-resistant foliage. Provides long lasting color in the garden. Phlox has long been considered a perennial staple for the garden. 

Arrives to you in a gallon-sized pot, as shown in photo 3.