I'm new to vermicomposting. The worms seem to breed extremely quickly, so I'm looking into using them in the garden.

I use pretty extreme soil. My Persimmon tree is sitting in 6cuft of Scott's Tree and Shrub garden soil with 2.25 cuft manure, and 4 inches of mulch. The garden (growing Kabocha) is sitting in 4cuft Scott's Vegetable Garden Soil, 4cuft of some off-brand Manure and Compost, and 3cuft Peat with 4 inches of mulch.

Next year I intend to turn the soil in the garden, mixing the mulch and rotting vines down into the soil. I'll add more manure, maybe more peat. Then I'll add some Red Wigglers and European Night Crawlers. On top of this will be 1/2 inch of used coffee grounds, and then 4 inches of wood mulch.

The tree I might dig a few holes around and mix in fresh manure, coffee grounds, and some of the mulch with the dirt. Worms in the top layer, a layer of coffee grounds, and mulch again.

I'm hoping that the Red Wigglers will spend a good deal of time consuming the manure, peat, decomposing wood mulch particles, and rotting plants and compost. The European Night Crawlers should work on some of the material, soil, and worm castings. The worms will probably pay some attention to the coffee layer, too; it's intended as a more general purpose fertilizer, but eh. The wood should also decompose slowly, producing heat well into November (I'm hoping wood mulch will decompose on the outside, feeding red wigglers, but still have plenty of remaining wood after 6 months).

The more popular in-situ method seems to be digging trenches and filling them with worms and material (paper, coffee grounds, manure, vegetable pieces, grass clippings, leaves, etc.). I'm not sure how this kind of extreme soil augmentation will pan out... any thoughts?