Feeding veg plants?

People who have conmfrey available - I don't, keep meaning to, never get round to it - story of my life! - just bung it into a bucket (preferably with a lid 'cos it honks) fill it with water and leave it a few weeks to rot down. Dilute the feed to weak tea colour. I generally try to get the soil fit before planting - feed it before the plants go in. Blood, fish and bone meal. I feed toms, chillies, strawbs with tomato food when fruiting. Otherwise, if the soil's fairly fertile I let things get on with it. Overfeeding can lead to too much leafy growth. Fine with brassicas but not for everything.

I believe that any food suitable for flowers will also be suitable for feeding anything that flowers and then fruits - toms, squash, beans etc - the fert. for flowering plants is high in potassium, which is just as good for flowering and fruiting veg as for ornamental flowers. I think.

Someone please correct me if I'm wrong here though, cos I don't know for sure!

Miracle Gro is absolutely wondrous with flowers, but according to a very good gardener I know it is that good partly because it has all sorts of fungicides in it to help ward off diseases etc that would otherwise stress the plants and slow their growth. So if you want organic veggies.... His words if I remember right were, "Oh s*** no, I would never use it on anything I was going to eat, it has all sorts of nastys in it!"
If you've got any manure sitting around, why not just put some in a wee cloth bag, steep for a little while, and use that as a vegetable food ? You do have to be careful if you are using it on leaf crops, obviously you can't use it too close to harvesting them or you have to be very careful how you apply it - but it is one of the old fashioned tricks for feeding veggies, so presumably some people did survive the experience !
All parts of comfrey are rich in potassium, flowers included, so should be usable as a plant food.
Warning: I too sometimes appear competent....