Garden Context: Sunny South-facing Garden in North London, UK. Appers not hugely cared-for in the last decade.
My experience: Almost None! This is my First garden and I'm just learning the ropes.
I've started weeding through the over grown borders of the garden and left behind some plants I didn't recognise.
I think there are 2 of the same plant, with red stems. What are they? (Previous search attempts "UK Red stemmed weed")