Phlox paniculata 'Jeana' is a great phlox if you’re looking for powdery mildew resistance. This perennial is great for the back of your border at 4-5’ tall. It has lovely pinkish lavender blooms starting in the middle of summer and lasting all the way through fall. It attracts a ton of pollinators, including hummingbirds. It needs well-drained soil, and full sun.