Meadowsweet, Narrowleaf Meadowsweet, Pale Bridewort, or Pipestem
Spiraea alba

Butterflies and other beneficial insects visit the plant for nectar and pollen. In autumn brown seed capsules appear and are fed on by songbirds. Glossy green foliage turns yellow in the fall. Deer tend to leave this plant alone. Meadowsweet is a host plant for the larvae of the spring azure butterfly. The blooms make a good cut flower.
The hollow, upright stems were used historically as pipe stems.