Phlox paniculata L.
The common name “garden phlox” is misleading, since this plant is a widespread North American native plant—the name refers to its popularity among gardeners. Numerous cultivars have been developed.
Identification: Plants are usually 24-36" (60-91 cm) tall, sometimes reaching 4' (1.2 m). Leaves are oval-shaped, 4-7" (10-17 cm) long, pointed at both ends, sometimes wider near the base, otherwise widest in the middle. Branched flower clusters 3-8" (8-20 cm) around are composed of multiple salverform flowers about 1" (2.5 cm) around, each with five petals. Flowers are pink, sometimes white or lavender.
Phlox paniculata on Missouriplants.com
Phlox paniculata at Illinois Wildflowers
Phlox paniculata on FLORIDATA
Phlox paniculata at the Lady Bird Johnson Wildflower Center
Phlox paniculata on Plants for a Future, a resource and information centre for edible and otherwise useful plants
Phlox paniculata on CalPhotos
Phlox paniculata on Wikimedia Commons
Phlox paniculata description by Thomas H. Kent, last updated 15 Oct 2013.