This week I plan to construct my 3 outdoor mushroom beds the following are my plans. The beds are about 3 feet by 4 feet and 18 inches high constructed from surplus sheet-metal. 1. Install a layer of weed block fabric to prevent weeds. Some of the videos suggest the first layer to be a layer of cardboard but I think the purpose (I’m not sure) is to be a weed block and to preserve moisture. 2. Next a thick layer of last year’s oak leaves. I have an almost unlimited supply and I expect the leaves will packed down and preserve moisture much as a cardboard mention above will do. 3. A 2 to 4-inch layer of sawdust. 4. A thin layer of wheat bran. I trust this will give the initial mycelium a food source. Hopefully it will not feed the contamination. 5. Now add the oyster mushroom spawn. 6. A 1 to 2-inch layer of wheat straw. 7. A 2 to 4-inch layer of six-month-old wood chips. Your thoughts and comments are welcome.