ID required. Possibly edible, possibly not...

Hi folks - anyone any ideas? I chucked down a huge bag full of mixed seeds earlier this year and it's all gone a bit mental. Now I can't remember what I put down.

The leaves look kinda edible, taste kinda lettucey but not in a good way.

The second one, not sure at all, thinking a weed. Furry stalk and underside of leaf

In fact, whilst I'm at it, I feel like these are crab apples - second opinion?

Thanks!

 

No1 has bolted and going to seed, whatever it is.
No2 I wouldn't like to guess.

The apples are not crab apples, they wont be ready for atleast a month probably more.

 

1) Looks like Mustard Greens, especially if it's one the plants below with the yellow flowers.

 

Rule of thumb, if you don't know what is is......... Don't eat it!

 

I wondered if 2 & 4 could be a young Comfrey, so took some pics of a leaf