Mushroom Substrate Recipe Guide | Grain Spawn, Bulk Substrate & Casing Layers | Gourmet Mushroom Cultivation | Digital Download PDF 11 pgs
Stop guessing. Grow with confidence.The Substrate Recipe Guide from Field & Circuit Co. is a comprehensive reference for substrate preparation in gourmet mushroom cultivation. Covers grain spawn, bulk substrate recipes, grow bags, casing layers, supplementation, and sterilization — all in one clean, professional document.Written for gourmet mushroom growers at every level. No fluff, no filler — just the recipes, ratios, and techniques that work.What's InsideGrain Spawn — All major grain types compared with grain-specific soak and simmer times, jar filling, and sterilization parameters Hardwood Sawdust & Bran (HWSB) — The standard wood-loving substrate with species recommendations and field capacity guidance Masters Mix — High-performance 50/50 hardwood sawdust and soy hull substrate for heavy yields, with species compatibility notes Dung & Compost-Loving Substrate — Coco coir and vermiculite base with beginner notes on grain spawn integration Straw Substrate — Full pasteurization method for oyster mushrooms, no pressure canner required Grow Bags — Bag types by filter patch rating, filling steps, sterilization guidance, and jars vs. bags comparison Casing Layers — Three recipes (coco coir, peat moss pH-buffered, worm castings) with species requirements table Supplementation — Risk/reward breakdown by supplementation level, common supplements, and application rates Sterilization & Pasteurization Reference — Complete pressure, time, and altitude adjustment tables for all substrates Spawn Rate Reference — Method-specific rates for every substrate and technique coveredField Capacity, Sterilization Times, Species Matching — All CoveredEvery recipe includes moisture targets, sterilization requirements, and species compatibility. Whether you're running oyster mushrooms on straw or lion's mane on Masters Mix, the guide tells you exactly what you need and why.About This GuidePart of The Primordium Series by Field & Circuit Co. — smart tools and resources for growers who want more control and less guesswork.All content is original, fact-checked against established cultivation science, and written specifically for gourmet species. Clean, professional formatting designed for easy reference at the bench.What You'll ReceiveInstant download — PDF delivered immediately after purchase via Etsy's digital delivery system. Print or keep digital — formatted for US Letter (8.5×11").Terms of UseFor personal use only. Not for resale or redistribution. © 2026 Field & Circuit Co. All rights reserved.
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