I’ve always wanted to see a mushroom farm and I was delighted when Ostrom’s Mushrooms at 8322 Steilacoom Road SE, Olympia, WA 98513 offered tours as part of the Pacific Northwest Mushroom Festival. The tour began with the plant manager (I think it was the plant manager) showing up how they create the soil out of mostly straw and then how they add the mushroom spores attached to millet. He walked us through each step of the multi-day process. The mushrooms grow in large beds which are stacked one on top of another about seven deep with about a foot clearance between each one. The pickers climb moveable steps and go from the top bed to the bottom. It sounds like very hard work.