Grow / Supplies
28 vetted supplies across 7 categories and 3 tiers — from beginner-friendly kits and spray bottles to advanced HEPA flow hoods and milligram precision scales. Affiliate-linked to suppliers Joe trusts. Same price as buying direct.
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Showing 6 of 32 supplies.
Standard grain substrate for spawn jars.
Whole rye is the standard grain spawn substrate for gourmet mushroom cultivation. The seed coat resists bacterial breakdown during pressure-cooking, and rye colonizes faster than rice or millet for most species.
Use: Stage 2 of intermediate course (grain prep)
$18
Buy →Quart mason jars with modified lids — synthetic-filter + injection port.
12 quart mason jars with custom lids: a synthetic-filter disc for gas exchange and a self-healing silicone injection port for sterile inoculation. Pressure-cooker safe. Reuse for years.
Use: Stage 2-3 of intermediate course
$75
Buy →Pasteurized oak/maple pellet substrate, ready to hydrate.
Hardwood pellet fuel pellets — usually oak or maple — are the foundation of bulk fruiting substrate for most gourmet species. Already kiln-dried, so adding water and pasteurizing is sufficient (no autoclave needed).
Use: Stage 5 of intermediate course (bulk substrate)
$25
Buy →Nitrogen-rich supplement for master's mix.
Soy hulls combined 50/50 with hardwood sawdust make 'master's mix' — the most productive supplemented substrate for oyster, lion's mane, and king trumpet. Adds protein and pushes biological efficiency past 100% of substrate dry weight.
Use: Stage 5 of intermediate course
$22
Buy →Autoclavable polypropylene bags with 0.2µm filter patch.
Standard polypropylene grow bags with sealed 0.2µm filter patches that allow gas exchange while blocking contaminants. Autoclave-safe to 250°F. The 5-lb capacity is the workhorse size for home production.
Use: Stage 5-6 of intermediate course (bulk fruiting)
$32
Buy →Buffers grain pH, reduces clumping during sterilization.
Food-grade calcium sulfate added to grain spawn (about 1 tablespoon per kg dry grain) buffers pH against acidification during pressure cooking, and prevents grain berries from clumping into a single mass. Standard mushroom-cultivation supplement.
Use: Stage 2 of intermediate course
$12
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