Ready to Inoculate
STERILE GRAINS
Clean, ready-to-inoculate grain bags built for fast, reliable colonization. Expertly hydrated and sterilized, they provide a dependable foundation for strong mycelial growth and consistent results.
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Sterile Grains Explained
Grain bags provide the foundation for colonization by giving mycelium a clean, hydrated, nutrient-rich medium to grow through before being mixed with substrate or fruited in the bag.

Milo / Sorghum

Small Grain Fast Colonization High Inoculation Points

Milo is one of the most popular grains used for spawn production. Its small size provides many inoculation points, allowing mycelium to spread quickly and evenly throughout the bag.

  • Small grain size improves colonization speed
  • Excellent distribution after break and shake
  • Great for liquid culture or agar transfers
  • Widely trusted for consistent performance

Popcorn

Large Kernel Easy to Inspect Classic Choice

Popcorn grain is a classic option known for its larger kernel size. Many growers appreciate being able to easily see colonization progress and contamination if it occurs.

  • Larger kernels make colonization easy to observe
  • Simple and beginner friendly
  • Strong grain structure
  • Reliable and easy to work with

Drippy Corn (Corn Syrup Infused Popcorn)

Premium Grain Pressure Hydrated Community Favorite

Drippy Corn is a specialty variation of popcorn grain that includes a small amount of corn syrup during preparation. The grain is hydrated under pressure, allowing some sugars to infuse while also leaving a light sugary coating on the outside of the kernels.

  • Hydrated under pressure to infuse the grain
  • Includes a small amount of corn syrup during preparation
  • Creates a light sugary coating on the kernel surface
  • Most of the syrup remains on the exterior rather than penetrating deep into the shell
  • Popular among experienced growers

Millet

Very Small Grain Maximum Inoculation Points Fast Recovery

Millet is an extremely small grain that creates a very high number of inoculation points. Many growers prefer millet when they want rapid recovery after break and shake.

  • Very small grain size
  • Creates a large number of inoculation points
  • Fast mycelial recovery
  • Excellent spawn distribution

What Sets Our Grains Apart

Every grain bag is prepared with consistency, hydration balance, and sterility in mind so you receive a dependable product that arrives ready to use.

  • Expertly hydrated for strong mycelial growth
  • Sterilized for a clean, reliable foundation
  • Secondary vacuum bag for safe shipping
  • Prepared with consistency from batch to batch
Ver todo

Ready for Your Next Grow?

We carry everything you need to keep things moving.

• Sterile Grain Bags • Substrates • Pre-Poured Agar Plates • Unicorn Grow Bags • Lab Supplies • Grow Kits & Refills

Let customers speak for us

from 804 reviews
Scalpel Set W/Blades
Emmanouel

Did the trick!

Scalpel Set W/Blades
Pre Poured Sorghum Yeast Agar for Fungi Culturing – Sterile, High-Quality Sorghum Yeast Agar
Emmanouel

Great agar!

Pre Poured Sorghum Yeast Agar for Fungi Culturing – Sterile, High-Quality Sorghum Yeast Agar
Parafilm
Frank

Arrived fast

Parafilm
Simple Mushroom Substrate - Ready-to-Use CVG/CVA Mix for Beginners
Kim

There is nothing simple about this stuff. Its great stuff. Holds moisturizer really well. I just purchased again for my final winter grow. Thanks for the great quality

Simple Mushroom Substrate - Ready-to-Use CVG/CVA Mix for Beginners
Small Monotub Refill Kit
Hunter

Packaged really good, did not expect

Small Monotub Refill Kit
Pre Poured Sorghum Yeast Agar for Fungi Culturing – Sterile, High-Quality Sorghum Yeast Agar
Joshua

Good agar! Will order again!

Pre Poured Sorghum Yeast Agar for Fungi Culturing – Sterile, High-Quality Sorghum Yeast Agar
Pre Poured Sorghum Yeast Agar for Fungi Culturing – Sterile, High-Quality Sorghum Yeast Agar
K.L.

Fast speedy delivery.

Pre Poured Sorghum Yeast Agar for Fungi Culturing – Sterile, High-Quality Sorghum Yeast Agar
Pre Poured Sorghum Yeast Agar for Fungi Culturing – Sterile, High-Quality Sorghum Yeast Agar
m.t.

As described. Fast and clean.

Pre Poured Sorghum Yeast Agar for Fungi Culturing – Sterile, High-Quality Sorghum Yeast Agar
MYPA Agar for Fungi Culturing – Sterile, High-Quality Malt Yeast Peptone Agar
m.t.

As described. Fast and clean .

MYPA Agar for Fungi Culturing – Sterile, High-Quality Malt Yeast Peptone Agar
Pre Poured Sorghum Yeast Agar for Fungi Culturing – Sterile, High-Quality Sorghum Yeast Agar
Brian

Sterile, nicely packaged, and cool color 😌

Pre Poured Sorghum Yeast Agar for Fungi Culturing – Sterile, High-Quality Sorghum Yeast Agar
12qt Shoebox Refill Kit | Mushroom Substrate and Grain
B.P.

the grain: i picked milo took off nicely, 2 cc’s per bag, 5 bags per syringe. Works very nice, bags will be done withing a week. I should break and shake right now but, I think ill wait another week or so. As for the bulk substrate, looks great ive been keeping it in our storage room, its super chilly in there. And, it should work great when the time comes. Personally, ive never had issues with any of the bags ive purchased. I hardly inoc in my SAB anymore, as theres no need I just flame sterilize the needle, and inoculate.

12qt Shoebox Refill Kit | Mushroom Substrate and Grain
XLS-B HORIZON UnicornBag - Mushroom Grow Bags - 5 -Micron Gas Exchange Filter Patch
Q.P.

The best , that can be obtained.

XLS-B HORIZON UnicornBag - Mushroom Grow Bags - 5 -Micron Gas Exchange Filter Patch
Syringe Tip Cap Luer Lock (10pk)
Q.P.

They are what they are.

Syringe Tip Cap Luer Lock (10pk)
25 - Sterile 50 mL Conical Tubes with Plastic Rack
Q.P.

Haha I finally got some before they ran out!

25 - Sterile 50 mL Conical Tubes with Plastic Rack
LCD Digital Scales
Q.P.

It works 💪

LCD Digital Scales