unknown plant

unknown plant

Observation - unknown plant. Description: I found this growing in a pot where the plant had died over the winter.At first I thought it was a nettle but it has no sting the stem is very rough and sticky like goose grass lots of hairs but as the plant has started to grow it seems to be a twisting c

I found this growing in a pot where the plant had died over the winter.At first I thought it was a nettle but it has no sting the stem is very rough and sticky like goose grass lots of hairs but as the plant has started to grow it seems to be a twisting climber.I have never seen anything like it before so its either from a bird or was a seed in the potting compost.