i would like to start with a "finer" mulch, almost like soil, and work up to a coarser mulch such as bark chip. I'm looking for someone who has tried putting down a 1 to 2" layer of mushroom compost onto the existing bed without tilling it in;as instructions on the bag say you can do this.
Merrill, I only use my tiller when I'm starting a bed because I have clay soil

and I could never break up the clumps of soil without my tiller, but after I have a bed established I never use the tiller on the beds anymore.

I have an awesome hand-held garden tool made by Snow & Nealley and I use that whenever I want to ammend the soil by adding compost, peat, etc., and I don't have to worry about disturbing the roots of other
plants if I'm careful!
Many people are constantly tilling up their beds but this is detrimental to maintaining healthy soil!

Tilling can destroy soil structure by breaking the soil up into finer and finer pieces which can wash down and clog the pores so air and water cannot get through which results in poor drainage. Tilling will also destroy the organic matter in the soil and this can result in loss of nutrients. Tilling also disrupts the soil ecology because it can hurt of kill earthworms and other organisms which are necessary to maintain a healthy soil.
Merrill, I see no reason why you can't add the mushroom compost and work it into the topsoil with a hand tool.
