Grain Master (CERTIFIED ORGANIC)

Grain masters from Cap N' Stem are trusted by farms across the US & Canada as the highest quality, most consistent in the industry for bulk expansion to G2 spawn. Our 4lb certified organic grain masters are comprised of an artisanal blend of hydrated, nutrient-rich proso millet and winter rye, ideal for vigorous and clean mycelial growth. They're sterilized in our vacuum autoclave system, allowing for minimally processed grains of the highest bioavailability. Originating from cultures stored in cryogenic deep freezers and vetted routinely for phenotypic integrity, our grain masters are produced through the shortest expansion process in the industry. Carefully inoculated from agar cultures and incubated in cleanroom conditions, our grain masters are stored in 34° refrigeration prior to packaging and shipping. All this means grain masters that will arrive healthy, colonize your bulk spawn with unrivaled vigor, and lead to harvests of exceptional yield and quality.

Orders placed within a given workweek (our business hours are Monday-Friday, 8 AM - 4 PM Eastern) typically ship the following Monday or Tuesday. If we are unable to ship your order within this timeframe, our office will contact you to provide a ship date. If you would like your shipment to be delayed, please contact our office at sales@capnstem.com or 207-317-9852.