Suggested searches

Plant-based protein powders
Vegan leather handbags
Bedroom decor
Waterproof jackets
Hoodies

Learn more about how we use your data to personalize your experience and ads. Recommendations are for informational purposes only.

Out Grow

Twelve quart-sized jars filled with a sterilized mix of grains, including rye, milo, and popcorn. The jars are arranged in a grid and feature self-healing injection ports on the lids, designed for easy inoculation and optimal mushroom cultivation.

Twelve quart-sized jars filled with a sterilized mix of grains, including rye, milo, and popcorn. The jars are arranged in a grid and feature self-healing injection ports on the lids, designed for easy inoculation and optimal mushroom cultivation.

Out Grow

Mega Mix Bulk Substrate Jars (12-Pack)

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$111.00$123.33

10% off

Color

Black

Quantity

Product description loading

Product description loading

This is the product description text that will appear here.

You might also like

Five sealed mushroom grow bags filled with fully hydrated and sterilized rye berries, each weighing five pounds. The bags are tightly wrapped in clear plastic and feature a self-healing injection port, ideal for inoculation and bulk mushroom cultivation.

10% off

Out Grow

Rye Berry Bulk Substrate Grain Bags (25 lbs)

Twenty-five sealed mushroom grow bags, each filled with one pound of fully hydrated and sterilized rye berries. The bags are neatly arranged in a grid, wrapped in clear plastic with visible filter patches, perfect for large-scale mushroom cultivation.

10% off

Out Grow

Rye Berry Bulk Substrate Grain Bags | With Injection Port (25-Pack)

Twelve quart-sized jars filled with fully hydrated and sterilized popcorn grains, arranged in a grid. The jars feature self-healing injection ports on the lids, making them ideal for easy inoculation and efficient mushroom cultivation.

10% off

Out Grow

Popcorn Bulk Substrate Jars (12-Pack)

mega mix sterilized grain bag 1lb

15% off

Out Grow

Sterilized Mega Mix Grain Spawn Bag – 1lb

(1)

1lb Pasteurized Mushroom Casing Mix - Ready-to-Use in Grow Bag

15% off

Out Grow

Pasteurized Mushroom Casing Mix

(4)

Brown Treasure

4.9

(56)

Beech mushroom grain spawn in a one quart jar, dense colonized grain on a stainless steel bench

Out Grow

Beech Mushroom Spawn, 1 Quart Jar

White bag of oak hardwood pellets and soy hull pellets with a close-up inset showing the pellets.

Spore Supplies

Master Mix Pellets For Mushroom Substrate

popcorn mushroom substrate grow bag folded front

15% off

Out Grow

Sterilized Popcorn Grain Spawn Bag – 3lb

Lion's Mane mushroom grain spawn in a one quart jar, clumpy white mycelium across the colonized grain

Out Grow

Lion's Mane Mushroom Spawn, 1 Quart Jar

Out Grow

All In One Mushroom Grow Bags 8-Pack

Five sealed rectangular blocks of 50/50 horse manure and straw mushroom substrate, each weighing five pounds. The blocks are tightly packed in clear plastic, showing a dark mixture of organic material with visible straw strands throughout.

10% off

Out Grow

50/50 Horse Manure and Straw Bulk Substrate (25 lbs)

North Spore

North Spore

4.7

(10.7K)

Sterile Substrate 'ShroomTek' + Spore Boostr All-In-One Mushroom Grow Bag

Sterile Substrate 'ShroomTek' + Spore Boostr All-In-One Mushroom Grow Bag

Sterile Substrate ‘Boomr Bag’ Manure-Based Sterile Mushroom Substrate

Fruiting Block Organic Lion's Mane Mushroom Grow Kit Fruiting Block

Sawdust Spawn Organic Wine Cap Mushroom Sawdust Spawn

Mega Mix All-In-One Mushroom Grow Bag

15% off

Out Grow

Mega Mix All-In-One Mushroom Grow Bag

(1)

white milo mushroom grow bag standing up forward

15% off

Out Grow

White Milo Mushroom Subtrate (3lb)

Pearl Oyster mushroom grain spawn in a one quart jar, fully colonized with dense bright white mycelium

Out Grow

Pearl Oyster Mushroom Spawn, 1 Quart Jar

Pink Oyster mushroom grain spawn in a one quart jar, white mycelium covering colonized rye grain

Out Grow

Pink Oyster Mushroom Spawn, 1 Quart Jar

King Oyster mushroom grain spawn in a one quart jar, smooth even white colonization, microscope in the background

Out Grow

King Oyster Mushroom Spawn, 1 Quart Jar

spore supplies 4kg masters mix substrate for mushroom cultivation

25% off

Spore Supplies

Masters Mix - 4kg Sterilised Mushroom Substrate Bag

(5)

Nameko mushroom grain spawn in a one quart jar, white mycelium speckled through colonized rye grain

Out Grow

Nameko Mushroom Spawn, 1 Quart Jar

Midwest Grow Kits

Midwest Grow Kits

Midwest Grow Kits

4.7

(2.6K)

Midwest's Select Bulk Substrate Casing Mix - 5 pounds

Midwest's Select Bulk Substrate Casing Mix - 5 pounds

Midwest's Black Cow Manure Substrate & Casing Mix - 5 lbs - Midwest Grow Kit's Extras (Image 1)

Sterilized Master's Mix Bag 5 lbs

Willy's Blend - Willy Myco's Official Premium Imported Manure-Based Substrate - 5 lbs - Midwest Grow Kit's Extras (Image 1)

Out Grow

Mushroom Grow Kit (Quick Kit)

Twelve quart-sized jars filled with fully hydrated and sterilized white millet grains, arranged in a grid. The jars feature self-healing injection ports on the lids, making them ideal for easy inoculation and efficient mushroom cultivation.

Out Grow

White Millet Bulk Substrate Jars (12-Pack)

15% off

Out Grow

Inoculate and Wait® Brown Rice Flour Based Mushroom Substrate

30% off

Max Yield Bins

Max Yield PRO Bulk Substrate Mix - 10 pounds

Cordyceps militaris grain spawn in a one quart jar showing the distinctive golden orange colonized grain

Out Grow

Cordyceps Mushroom Spawn, 1 Quart Jar

Sterilized popcorn grow bag 5lbs folded front

15% off

Out Grow

Sterilized Popcorn Grain Spawn Bag – 5lb

MP Substrates

5

(129)

Chestnut mushroom grain spawn in a one quart glass jar, colonized rye grain visible through the glass

Out Grow

Chestnut Mushroom Spawn, 1 Quart Jar

one ten pound bags of pasteurized CVG substrate on a white background

Exclusive offer available

Mushroom Spawn Store

10 lb Pasteurized CVG Substrate | Bulk Mushroom Mix

(3)

Twelve quart-sized jars filled with fully hydrated and sterilized rye berries, arranged in a grid. The jars feature self-healing injection ports on the lids, making them ideal for mushroom cultivation and inoculation in bulk.

10% off

Out Grow

Rye Berry Bulk Substrate Jars (12-Pack)

The curated dining table

The curated dining table

Dinnerware, glasses, and flatware.

Twelve quart-sized jars filled with fully hydrated and sterilized white milo grains, arranged in a grid. The jars feature self-healing injection ports on the lids, making them ideal for easy inoculation and efficient mushroom cultivation.

Out Grow

White Milo Bulk Substrate Jars (12-Pack)

Mini Mega Mix All-In-One Mushroom Grow Bag

15% off

Out Grow

Mini Mega Mix All-In-One Mushroom Grow Bag

(2)

golden wheat straw

10% off

Out Grow

Natural Wheat Straw (1 cubic foot)

Out-Grow 50/50 Horse Manure and Wheat Straw Substrate - 5 lb Bag Display

15% off

Out Grow

50/50 Horse Manure and Straw Mushroom Substrate (5lb Bag)

(2)

Shiitake mushroom grain spawn in a one quart glass jar, white mycelium threaded through the colonized grain

Out Grow

Shiitake Mushroom Spawn, 1 Quart Jar

pile of perlite

10% off

Out Grow

Large Horticultural Perlite (8 quarts)

Trees.com

Trees.com

Trees.com

4.1

(146.8K)

Growers of Mushroom

Starter Kit - Spawn to Bulk!

(3)

Five sealed mushroom grow bags filled with wood-based mushroom substrate, each weighing five pounds. The bags are tightly wrapped in clear plastic, displaying the finely textured wood fibers used for growing wood-loving mushrooms. Ideal for bulk cultivation.

10% off

Out Grow

Wood Based Bulk Substrate (25 lbs)

Five sealed mushroom grow bags filled with fully hydrated and sterilized popcorn grains, each weighing five pounds. The bags are tightly wrapped in clear plastic and feature self-healing injection ports, perfect for inoculation and bulk mushroom cultivation.

10% off

Out Grow

Popcorn Bulk Substrate Grain Bags (25 lbs)

Sterilized Red Milo Quart Jar

Out Grow

Red Milo Mushroom Jar – Sterilized 1 Quart

(1)

Bar cart basics

Bar cart basics

Carts, glassware, and bottle storage.

15% off

Out Grow

Inoculate and Wait® Mini Manure Based Mushroom Substrate

(4)

Enoki mushroom grain spawn in a one quart glass jar, white mycelium speckled through the rye grain

Out Grow

Enoki Mushroom Spawn, 1 Quart Jar

Maitake mushroom grain spawn in a one quart glass jar, tan and white colonized grain on a lab bench

Out Grow

Maitake Mushroom Spawn, 1 Quart Jar

15% off

Out Grow

Sterilized Oat Grain Spawn Bag – 3lb

(2)

Blue Oyster mushroom grain spawn in a one quart jar, densely colonized with thick white mycelium, Out-Grow lab

Out Grow

Blue Oyster Mushroom Spawn, 1 Quart Jar

Black Poplar mushroom grain spawn fully colonized in a one quart glass jar, white mycelium over rye grain, on a stainless steel lab bench

Out Grow

Black Poplar Mushroom Spawn, 1 Quart Jar

Twelve half-pint jars filled with a sterilized mix of brown rice flour and vermiculite substrate, arranged in a grid. The jars feature self-healing injection ports on the lids, ideal for easy inoculation and efficient mushroom cultivation.

Out Grow

BRF Bulk Substrate Jars (12-Pack)

Five sealed rectangular blocks of manure-based mushroom substrate, each weighing five pounds. The blocks are tightly wrapped in clear plastic, showing a dark, finely textured organic material. Ideal for bulk mushroom cultivation.

10% off

Out Grow

Manure Based Bulk Substrate (25 lbs)

(1)

mega mix sterilized grain bag mushroom substrate

15% off

Out Grow

Sterilized Mega Mix Grain Spawn Bag – 3lb

15% off

Out Grow

Inoculate and Wait® Wood Based Mushroom Substrate

(1)

Brown Oyster mushroom grain spawn in a one quart glass jar, white mycelium across colonized rye grain, petri dishes in the background

Out Grow

Brown Oyster Mushroom Spawn, 1 Quart Jar

Morel mushroom grain spawn in a one quart jar showing the distinctive dark rust coloured colonized grain

Out Grow

Morel Mushroom Spawn, 1 Quart Jar

Sculptural lamps under $150

Sculptural lamps under $150

Mushroom lamps, orb bases, and pleated cones.

Organic Rye Grains

Mycoboutique

Whole Rye Grains – Ideal for Mushroom Cultivation

Reishi mushroom grain spawn in a one quart jar, white mycelium over darker rye grain, Out-Grow lab

Out Grow

Reishi Mushroom Spawn, 1 Quart Jar