On the subject of feeding......plant some borrage, but be carefull as it can be a bit invasive...the flowers are edible but nothing special, however if you take the leaves and soak them with just enough water, they will produce a "liqour" much like baby bio.....water it down to provide a top quality fertiliser for all you're fruit and veg.....tomatoes love it!
Smoggy.
I think you can do the same with nettles and comfrey, and where we are there's LOADS of the stuff hanging around, saves taking up valuable garden space growing it.
Just a heads up though, the reason I'm relaying to you and not talking from experience is that I live in a terrace and I'm told it smells bad. So maybe better for the end of a big garden or an Allotment.