What plant is this?

lucyrobbo22

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? 

Silver surfer

Welcome to the forums.

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

lucyrobbo22

Silver surfer said:

Welcome to the forums.

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

Thanks for the help!