Patented PF-TEK formula with brown rice flour, vermiculite, and worm castings ensures rapid mycelium growth and high yields
Pressure-sterilized for 120 minutes in an autoclave to eliminate contaminants and guarantee sterility
Pre-drilled lid holes allow easy inoculation with spores or liquid culture
Dry vermiculite top layer protects against contamination and promotes healthy substrate
Handmade fresh each day for consistent quality and performance
Summarized by Shop
Ultimate Half Pint Substrate Jars (12-Pack) Freshly Made • Sterile • Fastest Colonization on the Market (ON SALE!) After over 15 years of refinement, we’ve perfected the art of substrate jars. Our Ultimate 8oz substrate jars are trusted by growers across the country for their consistent results, unbeatable colonization speed, and superior
Jar Size
8 oz (1/2 pint)
Material
Glass canning jar with aluminum foil lid
Sterilization
Pressure sterilized for 120 minutes in commercial autoclave
Pre-drilled Holes
4 per lid
Ingredients
Brown rice flour, vermiculite, mineral water, liquid worm castings, bee pollen