Midwest's Black Cow Manure Substrate & Casing Mix - 30 Pounds (BULK 6- – Midwest Grow Kits

Free shipping on orders over $99

Phone Support (M-F) 11am to 5pm CST

All New May Deals are Here! See What's on Sale Here!

Midwest's Black Cow Manure Substrate & Casing Mix - 30 Pounds (BULK 6-PACK)

$9799 $12500
Taxes, discounts and shipping calculated at checkout.
Fully hydrated 5 lb Black Cow Manure Casing Mix made from composted grain-fed cow manure, coir, and minerals. Ideal for bulk mushroom grows and Monotub setups.

🔥 20+ purchased in the last 30 days

Description

Midwest’s Black Cow Manure Based Bulk Substrate & Casing Mix – 30 lbs (6-Pack)

Bulk Value • Ready-to-Use • Fully Hydrated • Ultra-Composted • Ideal for Monotubs & Bulk Grows

Scale up your bulk grows and save with Midwest’s Black Cow Manure Based Bulk Substrate 6-Pack. This bulk bundle includes six 5 lb bags of our ready-to-use manure-based substrate and casing mix, giving you a full 30 pounds of premium bulk substrate for monotubs, trays, and larger growing projects.

Made with ultra-composted dairy cow manure and a carefully balanced blend of moisture-retaining and pH-supporting ingredients, Black Cow is designed for growers who want a dependable manure-based bulk substrate with the convenience of a fully prepared mix. Each bag arrives fully hydrated and ready to use—just mix with fully colonized grain spawn and grow.

Midwest Black Cow manure based bulk substrate 6 pack bundle


Why Growers Choose the Black Cow 6-Pack

  • Save More in Bulk – Get the same trusted Black Cow substrate in a discounted 6-pack bundle for larger grows and repeat use.
  • Manure-Based Bulk Substrate – Made with ultra-composted dairy cow manure for growers who prefer a traditional manure-based mix.
  • Ready to Use – Fully hydrated and sealed for convenience, with no additional prep, mixing, or measuring required.
  • Built for Bulk Growing – Ideal for monotubs, trays, fruiting chambers, and larger batch substrate prep.
  • Consistent Texture & Moisture – Carefully blended for even mixing and dependable results from bag to bag.

What’s Included

  • 6 × 5 lb bags of Black Cow Manure Based Bulk Substrate & Casing Mix
  • 30 lbs total ready-to-use substrate
  • Fully hydrated and sealed for convenience

Premium Formula

Our Black Cow substrate blend combines traditional manure-based growing material with proven bulk substrate ingredients for consistent performance and easy use.

  • Ultra-composted dairy cow manure
  • Coco coir
  • Vermiculite
  • Spring water
  • Gypsum & hydrated lime
  • Mineral buffer blend including calcium, magnesium, and sodium bicarbonate

Recommended Usage

  • 1 to 1.5 grain spawn bags per 5 lb bag
  • About 3 quick-colonizing 24 oz jars per bag
  • About 6 half-pint jars per bag

This 6-pack is ideal for running multiple monotubs, filling larger trays, or keeping extra substrate on hand for repeat grows.


Real Results Using Black Cow

See what growers can achieve using Midwest’s Black Cow Manure Based Bulk Substrate in monotub and bulk grow setups.

Real results using Midwest Black Cow manure based bulk substrate in monotubs


Storage & Shelf Life

  • Store sealed in a cool, dry place
  • Best used within 45 days when stored at room temperature
  • Do not freeze

Important Notes

This 6-pack bundle is already discounted. Coupon codes and promotional discounts do not apply. If you would like to use a promo code on other items, please place this product in a separate order.

Our Growing Experts Recommend

Products our growers commonly use with this item