THIS PRODUCT IS MADE IN BATCHES CLICK HERE FOR LEAD / DELIVERY TIMES. THIS PRODUCT SHIPS AFTER 4 WORKING DAYS OF PROCESSING. ORDER EARLY TO AVOID DELAYS.
The classic grain jar, done properly. Same meticulous prep as our grain bags — 24-hour gypsum soak, precise hydration, then 1.5 hours at 15 PSI in a pressure cooker — but delivered in a glass Mason jar for growers who prefer a reusable, easy-to-inspect vessel. Glass lets you watch colonisation progress day by day without opening anything.
Choose from metal or plastic lids; both come fitted with a self-healing silicone injection port and a 0.22-micron microppose air filter pre-installed.
Options
Size: 500 ml · 1000 ml
Lid: Plastic (rust-free) · Metal
Grain: Pearl Millet · Sorghum · Corn · Wheat
Suitable for all mushroom species. Produced in batches — see current lead times.
