Hemp-Nettle (Galeopsis tetrahit agg.)

Hemp-Nettle (Galeopsis tetrahit agg.)

Observation - Hemp-Nettle (Galeopsis tetrahit agg.). Description: Growing in a very wet area. I'm fairly sure that this is one of the mint-like plants. Can anyone help by identifying it from the seed heads, please? Edit: title changed to match Cabbageleek's ID - thanks.

Growing in a very wet area. I'm fairly sure that this is one of the mint-like plants. Can anyone help by identifying it from the seed heads, please?

Edit: title changed to match Cabbageleek's ID - thanks.