I'm trying to make the switch to adding natural instead of synthetic fertilizer to my vegetable garden (and stop tilling while I'm at it). Besides compost, I'm curious whether I could use some kitchen and garden scraps for this purpose. I don't have room for a compost pile.

Googling it, some blogs suggest scattering tea leaves, peanut shells, grass clippings, leaves from the beech hedge and even shredded banana peels on the soil.

How do I know which and how much of these scraps to use? For example, using too much tea leaves seems to make the soil more acidic. And won't the banana peels attract fruit flies?