Cheshire,
United Kingdom 
Hi everyone, I was wondering if you could help me to identify the plants in the two attached pictures. I am not sure whether they or weeds (I am in the UK). I have been giving some thought to uprooting them, so their future is in your hands! Many thanks in advance for your kind assistance. Regards, Adam.
17 Jun, 2013
Answers
The second is nipplewort, a little yellow daisy flower atop about a 3 ft plant. Chickens love it, but, yes, it's a weed (well, wild flower, usually finding itself in totally the wrong place). You'll find it pulls up very easily. Gets its name from the tiny flower buds which have a definite resemblance to prominent nipples.
17 Jun, 2013
the top does look like lemon balm or at least one of the family. and I agree about the second one. pretty but not 'garden worthy'. though worthy1 is very garden worthy.
18 Jun, 2013
Previous question
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The first one looks a little like Lemon Balm. Does it have a lemon scent ?
The second one looks like a weed to me.
Hopefully someone else will have some ideas.
17 Jun, 2013