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Description

Mega Mix Mushroom Jar – Sterilized 1 Quart for Mushroom Cultivation

Out-Grow’s Mega Mix Mushroom Jar offers a professionally prepared, sterilized substrate in a convenient 1-quart format. This mushroom jar features a balanced blend of yellow popcorn, red milo, and rye berries—three proven grains that provide a diverse nutrient profile for robust mycelial colonization. Prepared in a commercial mycology lab and hydrated with natural spring water, this jar delivers the purity and performance growers expect from professional cultivation supplies.

Lab-Prepared Mushroom Jar with Filter Patch for Clean Growth

Each Mega Mix mushroom jar is pressure-sterilized at 15 PSI for three hours and sealed with a 5-micron filter patch for continuous, sterile gas exchange. This setup supports strong, even colonization while reducing contamination risk. Designed to perform in room temperatures between 65°F and 75°F, the Mega Mix formula is ideal for cultivators looking to accelerate growth without sacrificing quality or control.

A Trusted Mushroom Cultivation Jar for Reliable Results

One quart jar can inoculate up to 5 pounds of bulk substrate, making it a powerful tool for both hobbyists and commercial mushroom growers. With more inoculation points and a wide nutrient range, the Mega Mix supports fast, healthy mycelium expansion across many mushroom species. While best used fresh, these jars can be stored in a cool, dry location for up to three months in their original packaging.

Backed by Over 15 Years of Mushroom Cultivation Experience

Out-Grow has been producing high-quality mushroom substrates and sterilized grain products since 2010. Every mushroom jar is the result of years of refinement, laboratory testing, and real-world grower feedback. Whether you're a first-time hobbyist or a seasoned cultivator scaling up production, our sterilized mushroom jars offer the convenience, consistency, and cleanliness you need to grow with confidence.

Order now and see why Out-Grow mushroom jars are trusted by growers nationwide for consistent, professional-grade results.

Customer Reviews

Based on 3 reviews
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K
KP
Quality

Arrived quickly. The quality of this grain spawn is immediately evident. Innoculated and colonized faster than expected. I will purchase again. I highly recommend.

c
carrie
great

thumbs up

c
carrie
good

Colonized pretty fast, and very full.