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2lb x 6 RYE Grain Spawn Grow Bags * Rye Berries, Trays and Bulk Grows * Ready to Add Spores!


Out of stock

We've taken everyone's favorite Rye Berries and added our decades of cultivation experience to create a blisteringly fast mycelium growth medium.

INGREDIENTS: Organic Rye Grains locally sourced and perfectly prepped, Powdered Millet, Powdered Calcium, Norwegian Kelp, Course Vermiculite, and our own secret mix of booster nutrients.

Guaranteed Sterile and 100% Ready to Use 

Add 2-3 cc from your Spore Syringe (Not Provided) and get ready to see colonization in record setting times! Amazing results with many types and species of mushrooms. Once fully colonized these are often used for bulk substrate inoculation to expand or as grain trays in conjunction with our Hydrated Casing Mix.

Suited for growing a huge variety of species.

2 pounds per sterilized bag


Fully Sterilized and 100% perfectly prepared organic Rye grain spawn mushroom substrate with clean air filter patch built in. Organic Rye grain is generally considered the single best option for mushroom spawn production by home growers and professional growers alike because of it’s fast colonization times and ease of use when expanding to larger bulk tubs or trays. Our organic Rye Grain sterilized mushroom spawn is locally grown in northern Maine, so you know it’s clean. Hydrated and fortified with micro-minerals, gypsum, and other booster nutrients to get your spores growing fastest!

**Does not include a spore syringe.**

Ancient Path Naturals organic Rye mushroom spawn bags can be used to cultivate nearly any species of mushrooms you choose. Just add spores and you’ll begin to see growth in just a few days.
Colonized grain spawn can be used to inoculate a mono tub, trays, bulk substrate, or an outdoor bed. It can also be used for grain to grain transfer using more sterilized grains to further expand the mushroom mycelium. Also try adding our Hydrated Casing mix to help prevent contamination and boost yields.