Grain Spawn Bags — 6 Pack | Sterilized & Ready to Inoculate

🍄 Six Bags of Sterilized Grain Spawn at Our Best Per-Bag Price

For larger grows and repeat spawning, the That Mushroom Grain Spawn 6 Pack gives you six ready-to-inoculate 3lb bags in the grain of your choice.

📦 What's Inside

• 6 × 3lb Sterilized Grain Spawn Bags — choose rye grain, sorghum (milo), millet, popcorn, or whole oats
• Each bag has a self-healing injection port and 0.2 micron filter patch

✅ Key Features

• 🌾 Choose your grain at checkout
• 🧪 Autoclave sterilized — prepared to reduce contamination risk
• 💉 Self-healing injection port on every bag
• 🌬️ 0.2 micron filter patch for gas exchange
• 💲 Our lowest per-bag price on grain spawn

🌱 Who Is This For?

Growers spawning to bulk substrate regularly, running multiple tubs, or stocking up. Want a smaller order? Try the Rye 3 Pack or the Variety 3 Pack.

❓ How Do I Use It?

1. Wipe the injection port with an alcohol swab and flame-sterilize your needle
2. Inject liquid culture or spore solution through the port
3. Store at room temperature in a dark location
4. Shake the bag to distribute colonized grain as it grows
5. Use the fully colonized grain to spawn to substrate

💯 The That Mushroom Guarantee

If something arrives damaged or contaminated, we'll make it right. Free shipping on orders over $150.