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3 lb Sterile Corn Grain Spawn – FREE Injection Port Included
Organic Popcorn Grain • Pressure Sterilized • Ready to Inoculate
Premium Quality for Consistent Colonization
Achieve strong, consistent growth with our 3 lb Sterile Corn Grain Spawn Bag. Made from organic popcorn grains,
carefully hydrated and pressure sterilized for a clean start and reliable performance.
Why Choose Our Sterile Corn Grain Spawn?
- Organic Popcorn Grains – Durable kernels with consistent hydration.
- Autoclave Sterilized – Processed at 15–17 PSI for contaminant-free grain.
- Efficient Colonization – Popcorn is easy to inspect, shake, and break apart.
- Professional-Grade Build – Trusted by hobbyists and experienced growers.
What’s Included
- 3 lb Hydrated & Sterilized Organic Popcorn Grain – Ready for inoculation.
- Unicorn 10T Mycology Bag – Built for clean gas exchange.
- Self-Healing Injection Port (Microppose) – Helps reduce contamination risk.
- Secondary 4 mil Vacuum-Sealed Bag – Added sterility protection and extended shelf life.
Quick Start Guide
Storage & Support
- Storage: Keep sealed between 45°F and 70°F for best results.
- Use as soon as possible to prevent drying or nutrient breakdown.
- Do not freeze.
Need Assistance?
Hit the chat button at the lower right for help with orders or product questions.
Hit the chat button at the lower right for help with orders or product questions.
Pairs Well With
- Not So Simple Substrate – Nutrient-rich and mineral-enhanced for vigorous growth.
- Simple Substrate (CVG Mix) – Classic coir/vermiculite/gypsum blend for all skill levels.
Explore Other Grain Options
- Corn Grain Bags – Durable kernels that hold structure well.
- Drippy Corn – Nutrient-dense option for advanced workflows.
- Millet Grain Bags – High inoculation points for increased surface area.
Fast, discreet shipping — order with confidence.





