It is a Hydrangea.

Panicled hydrangea, Hydrangea paniculata.

and given the appearance of the blooms, likely Quickfire or perhaps Little Quickfire. QF is one of my favorite garden plants, blooming in my central NH garden from the beginning of July until hard frost, typically in late October, so a full 4 months. Around now mine starts getting a pale pink cast and by Labor Day it is a rich pink that lasts until frost.

dup post

I don’t think it is a duplicate since there are no similar posts that this poster has added when I go to terrineff’s page.