Devon,
United Kingdom 
ID please. A patch of these has appeared in a shady part of the garden. So pleased I left them to grow as they have the most exquisite small purple flowers.
I wonder which insects are attracted to them too.
27 Jun, 2020
Answers
Thankyou Anget. I'll look it up. Sorry it's a sideways pic and flowers are out of focus.
27 Jun, 2020
Anget. Congratulations, it is indeed Betony. Useful for curing people of bad dreams.
27 Jun, 2020
I could do with some Betony then, Merlin! I've been having unpleasant dreams for many weeks now.
30 Jun, 2020
Arbuthnot, I suggested a Betony tea to my partner as he shouts out and waves his arms around, on a regular basis. However, he maintains that he doesn't have bad dreams.
Bad dreams can carry one on into the day and I find them disturbing. Some meds can cause it but if that's not the case, I think the Betony tea might be a natural remedy worth trying. I know I would.
30 Jun, 2020
Looks like it could be betony? (stachys officinalis)Native wildflower.
Others will be more certain than me. I'm not sure.
27 Jun, 2020