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Blue Oyster Mushroom Grain Spawn (1 pound) symbiotic Community gardensPremium grain spawn cultured on 100% organic rye berries, featuring our professional grade Blue Oyster strain. Each pound comes fully colonized and ready for bulk substrate expansion. Key Features: Fast colonizing strain 30 day shelf life at room temperature 6 month refrigerated shelf life 100% contamination free guarantee Certified organic rye berry base Professional grade genetics Cultivation Requirements: Expands well on straw or hardwood
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