

Hi, I know very little about gardening. This plant has been growing in my garden for a couple of months, it grows very fast and has spread a lot of seedlings around the garden, the main plant it quite big (around 5ft long, 2ft wide, and the highest point is around 1ft) It has pink flowers and the leaves have dark spots on them. I was curious about what it is?
Posts
Persicaria sp.
Maybe....Persicaria maculosa...common name redshank.
https://www.ukwildflowers.com/Web_pages/persicaria_maculosa_redshank.htm
https://www.google.com/search?q=Persicaria+maculosa.&rlz=1C1CHBF_enGB785GB785&sxsrf=ALeKk03MbJoMiMNznwlMylJY-yrZZFiDSA:1598886077329&source=lnms&tbm=isch&sa=X&ved=2ahUKEwiYt7Pl2sXrAhUFmVwKHeEmAkcQ_AUoAXoECBoQAw&cshid=1598886098216133&biw=1280&bih=578#imgrc=q6swKgrf5sF2nM