By Plant1ng
Leicestershire,
United Kingdom 
I was amazed at the luxuriant growth of this unfamiliar plant last summer in a pot in my patio. I am posting the photo here for the identification. Thanks in advance.
10 Dec, 2013
Answers
Indeed, it's a weed. Could it be "Fat Hen" ?
11 Dec, 2013
Definitely - and you should get rid of it ASAP if you haven't already, as it looks as though it's getting ready to seed itself soon! Eeeek!
11 Dec, 2013
I agree. It's Fat Hen. Get rid of it !
11 Dec, 2013
I knew it had a hen in it but wolley headidness set in!
11 Dec, 2013
I believe its a weed but can't remember its name. Someone else will tell you.
11 Dec, 2013