24 oz Premium Super Quick-Colonizing 5-grain Jar

24oz Premium Super Quick Colonizing 5-Grain Spawn Jar

Lightning-Fast Colonization • Tapered Glass Design • Sterile Grain Spawn

The Midwest Grow Kits 24oz Super Quick Colonizing 5-Grain Spawn Jar is engineered for growers who want faster colonization and easier spawn handling. This sterile grain jar uses a high-performance 5-grain blend combined with a tapered glass jar design that allows the fully colonized grain mass to slide out more easily when it’s time to spawn to bulk substrate.

Compared to traditional 32oz jars, the smaller 24oz size often allows for faster colonization times, while the specialized grain blend creates more inoculation points for aggressive mycelium growth.

Why Choose the 24oz Super Quick Colonizing Jar?

• Faster Than Larger Grain Jars – Smaller jar size supports quicker colonization cycles.
• Tapered Glass Jar Design – Allows the colonized grain to slide out more easily once fully grown.
• Rapid Colonization Grain Blend – High ratio of smaller grains increases inoculation points.
• Clean & Easy Inoculation – Self-healing injection port works with spores or liquid culture.
• Reliable Gas Exchange – Premium 0.22 micron filter disk maintains airflow while protecting sterility.
• Great for Bulk Growing – Ideal for monotubs, trays, casing mix, and bulk substrate expansion.

What’s Included

• One (1) 24oz Tapered Glass Grain Spawn Jar
• Premium Quick Colonizing 5-Grain Blend featuring:
  • Nutrient-enriched rye berries
  • High ratio of smaller grains for faster colonization
  • Mineral water fortified with gypsum and diammonium phosphate
• 0.22 Micron Filter Disk for sterile gas exchange
• Self-Healing Injection Port for clean inoculation
• Pressure Sterilized at 15 PSI for 120 Minutes

Product Specifications

Recommended Usage Chart

Built for Speed and Easy Spawn Transfer

The 24oz Super Quick Colonizing 5-Grain Spawn Jar was developed for growers who want both faster colonization and easier spawn handling. The smaller jar size allows quicker growth while the tapered design helps the finished grain spawn slide out more cleanly when it’s time to mix with bulk substrate.

This makes the jar especially useful for growers using monotub systems, bulk substrate grows, and casing mix where quick colonization and easy jar handling can help improve workflow and consistency.

Fast Colonizing Grain Spawn for Mushroom Cultivation

The Midwest Grow Kits 24oz Super Quick Colonizing 5-Grain Jar provides a sterile, ready-to-use spawn option designed for fast colonization and easy transfer into bulk substrate. If you want a grain jar that moves quickly and simplifies spawn transfer, this is one of the most efficient options available.

New to Grain Spawn?

Learn exactly how to inoculate, incubate, and fully colonize your spawn bags or grain jars with our step-by-step guide.

Read the Full Guide →