American Water Horehound - Lycopus americanus (Mint Family)

Native Perennial to MA,  Grows up to 20" Tall with tiny, white, tubular flowers clustered in dense groups around a square stem in June, July, August , September 

Prefers: Shade with wet-moist soil 

(Native habitat: Shores of rivers or lakes, swamps, wetland margins (edges of wetlands)