Description

Popcorn Mushroom Jar – Sterilized Substrate 1 Quart for Mushroom Cultivation

Out-Grow’s Popcorn Mushroom Jar delivers a sterilized, high-moisture substrate in a convenient 1-quart format, ideal for cultivating gourmet mushrooms. Popcorn is favored for its ability to retain moisture longer than smaller grains, providing the ideal environment for vigorous mycelial growth and stable colonization. This mushroom jar is ready to use and expertly prepared in a commercial lab setting.

Mushroom Cultivation Jar with Filter Patch and Injection Port

Each jar is filled with fully hydrated popcorn grain that has been sterilized at 15 PSI to eliminate contaminants. A self-healing injection port makes inoculation clean and simple, while a 5-micron filter patch ensures continuous sterile gas exchange. These features work together to reduce contamination risk and support fast colonization across a variety of mushroom species.

Reliable Mushroom Jar Substrate for Bulk Inoculation or Spawn Expansion

This 1-quart mushroom jar provides enough colonized substrate to inoculate up to 5 pounds of bulk substrate or perform grain-to-grain transfers. Popcorn’s larger grain size makes it especially effective for cultivators who need a slower-drying, high-retention substrate. It’s a reliable option for growers who prioritize yield stability and moisture control in their spawn runs.

Built for Hobbyists and Commercial Growers Alike

Out-Grow has supplied sterilized mushroom substrates since 2010 and remains a trusted source for growers nationwide. Our popcorn mushroom jars are a dependable tool for small-scale cultivators and commercial farms alike, packaged for freshness and built for clean, consistent results. Use immediately or store in a cool, dry location for up to three months.

Order today and experience the moisture-retaining performance and cultivation success of Out-Grow’s sterilized popcorn mushroom jars.