What is this plant

in Plants
Please can anyone identify this plant which I got from my mum's garden. I have planted some under a tree in my garden and they have spread out a lot. I assume they self seed.
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Please can anyone identify this plant which I got from my mum's garden. I have planted some under a tree in my garden and they have spread out a lot. I assume they self seed.
Posts
I've got the same. I thought it was Betony but not sure
Thanks for your reply. I googled betony and the images look like my plant. so mystery solved.