When I think back to the amount of shredded leaves I collected last fall, my mind boggles at how little evidence is left.
I stored shredded leaves in 12 of my 2 1/2′ diameter tomato cages (about 3′ high in each), filled a 3’x3′ compost bin, another 4’x4′ bin, and layered shredded leaves in sections of the garden. Logic aside, they’ve pretty much returned to the soil except in a few places where I refreshed them with stored leaves in the spring.
The theory that you really can’t collect too many leaves still holds.
The buckwheat that I planted a couple of days ago as green manure is popping through. Replacing the organic matter and nutrients taken out of the garden isn’t a one-time deal. Those veggies above and below ground create massive quantities of leaf material, and it all needs to be replaced.