All-in-One Mushroom Grow Bag Kit – Premium Rye Grain + CVG Substrate, 1.5 lb

The easiest way to grow gourmet mushrooms at home. One 1.5 lb bag holds sterilized rye grain and a pre-hydrated coco coir, vermiculite and gypsum (CVG) substrate, so there's no mixing station, no pressure cooker and no extra gear to buy.

What's Included

• 1.5 lb all-in-one grow bag (2-Pack = two bags, 3 lb total): triple-washed rye grain + CVG substrate
• 0.2 µm filter patch, self-healing injection port and sterile indicator strip on every bag
• Glove pack (nitrile gloves and alcohol prep pads)
• Step-by-step instructions and a FunGuy sticker

Live mushroom culture is sold separately. The bag is ready for your own liquid culture and works with a wide range of mushroom species.

How It Works

1. Prep: Put on gloves and wipe the injection port with an alcohol pad.
2. Inoculate: Inject 3–5 cc of liquid culture through the port.
3. Colonize the grain: Keep the bag somewhere dark and warm. White mycelium usually appears in 7–14 days.
4. Break & shake: When the grain is mostly colonized, break it up and mix it into the substrate layer, then leave the bag alone.
5. Fruit: Once the bag is fully white, pick the fruiting method that suits you: cut open the top of the bag and fold it down; remove the block from the bag and place it in a monotub with perlite (this gives the biggest yield); or use the hoodie-tek method. Our step-by-step instructions cover the pros and cons of each. Then give it fresh air, indirect light and humidity.
6. Harvest: Pick clusters just before the caps flatten, then rehydrate for another flush.

Timeline

• First visible growth: 7–14 days after inoculation
• First harvest: about 3–5 weeks after inoculation, depending on species and conditions
• Up to 3 flushes per bag

Ideal Conditions

• Colonization: 75–80°F, in the dark
• Fruiting: 65–75°F, indirect light, frequent fresh air, high humidity
• Keep the filter patch uncovered so the bag can breathe

Yield Expectations

Yield varies with the species, your culture and your growing conditions. Each bag can give up to 3 flushes; rehydrate between flushes for the best follow-up harvests.

FAQ

Which mushrooms can I grow? Works with a wide range of mushroom species. The coco coir substrate isn't ideal for lion's mane or shiitake, which prefer hardwood sawdust.

Is a culture included? No. Add 3–5 cc of your own liquid culture.

How long can I store it? Use it within 2 weeks for best results. Un-inoculated bags keep up to 4 weeks in a cool, dark place.

Do I need a pressure cooker? No. The bag arrives sterilized.

Where do you ship from? West Greenwich, Rhode Island. Most orders ship in 1–2 business days.

Coming soon: pre-inoculated Blue Oyster grow kits, with no culture needed. Check back or join our email list to hear when they launch.

100% Success Coverage

Every FunGuy kit is made in our Rhode Island lab and backed by our 100% Success Coverage for 30 days. If your kit arrives contaminated, send us a photo and we'll replace it free of charge.

Need help? See our Growing Guides and Troubleshooting Guide.