Monotub Mushroom Grow Kit — 1 Grain Bag + 2 CVG Substrate Bags

🍄 The Grain and Substrate You Need for a Monotub Grow

The That Mushroom Monotub Grow Kit gives you the two key ingredients for a monotub: sterilized grain spawn in your choice of grain, plus two bags of CVG bulk substrate. Colonize the grain, mix it into the CVG, and fruit.

📦 What's Inside

• 1 × Sterilized Grain Spawn Bag (3lb) — choose rye berry, sorghum (milo), millet, popcorn, or whole oats
• 2 × CVG Substrate Bags (5lb each) — coco coir, vermiculite, and gypsum, ready to use

The grain bag has a self-healing injection port and filter patch, and is autoclave sterilized.

Not included: monotub, liquid culture or spores.

✅ Key Features

• 🌾 Choose your grain at checkout
• 🧪 Autoclave sterilized grain — prepared to reduce contamination risk
• 💉 Self-healing injection port and 🌬️ 0.2 micron filter patch on the grain bag
• 🌿 Bulk CVG substrate sized to fill a monotub
• 💲 Kit pricing compared with buying each item separately

🌱 Who Is This For?

Growers who have, or are building, a monotub and want ready-made grain and substrate without preparing either themselves. Species that prefer a wood-based substrate? See the Wood-Lover's Block Kit.

❓ How Do I Use It?

1. Inject your liquid culture or spore solution into the grain bag
2. Wait for full colonization of the grain
3. Mix the colonized grain with the CVG in your monotub
4. Maintain fruiting conditions until pins form
5. Harvest your flush 🍄

💯 The That Mushroom Guarantee

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