Shrum All-In-One Grow Bag Mini

$32.99

The Shrum All-In-One Grow Bag Mini is a compact, ready-to-use solution for growing mushrooms at home. It arrives fully hydrated and vacuum-sealed, with a pre-mixed substrate of rye grain and coco coir. A self-healing injection port enables clean inoculation with spores or liquid culture while reducing contamination. Designed for small spaces and simple setups, it supports full colonization and fruiting with minimal equipment. Perfect for beginners or anyone looking for a straightforward way to grow mushrooms.

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Shrum All-In-One Grow Bag Mini

The Shrum All-In-One Grow Bag Mini is a compact, straightforward option for growing mushrooms at home without a complex setup. Created by Advanced Mycology, this mini all-in-one grow bag brings everything into one sealed system, making it easier to get started, whether you’re new to mushroom cultivation or simply want a cleaner, simpler process.

Each mushroom grow bag arrives fully hydrated and vacuum sealed to preserve freshness and shelf life. The ready-made substrate blend of rye grain and coco coir provides a balanced foundation for steady mycelial growth.

A built-in self-healing injection port lets you inoculate the sealed bag with spores or liquid culture while limiting exposure to mold and bacteria. Since the substrate is fully prepared, you don’t need to mix ingredients, add a casing mix, or transfer anything into tubs later.

Growers who want a larger-format or higher-volume setup may also consider options such as the Wunder Mushroom All-In-One Grow Bags, which support extended grows and higher yields. However, many growers prefer the mini grow bag for smaller spaces, testing new mushroom species, or for a more manageable, lower-commitment grow.

The mini grow bag format suits smaller spaces and lower quantity grows, making it easier to manage, store, and monitor. This one grow bag supports full colonization and fruiting when you maintain proper humidity levels and light exposure.

Suitable for a range of mushroom species, including gourmet varieties like lion’s mane, the Shrum All-In-One Grow Bag Mini offers a clean, practical way to grow mushrooms with minimal equipment and hands-on effort.

How to Use

To begin, place the bag on a clean surface and wipe the self-healing injection port with an alcohol pad. Inject your chosen spores or liquid culture through the port, following the recommended amount for your mushroom culture. After inoculation, gently mix the contents by lightly breaking up the grain portion within the bag to ensure the culture spreads evenly throughout the substrate.

Next, set the vacuum-sealed bag in a clean area at a stable room temperature and allow it to colonize. During this stage, the mycelium gradually grows through the rye grain and coco coir mixture until the substrate fully colonizes. The sealed design maintains moisture and airflow while keeping contaminants out, so you do not need to open or adjust the bag during this phase.

Once the substrate is fully colonized, move the bag to proper fruiting conditions by providing indirect light, fresh air exchange, and consistent humidity. At this stage, the mushrooms begin to fruit and mature over the following days. Harvest when ready, then store fresh or prepare as dried mushrooms if desired.

What happens if the grow bag shows signs of contamination?

If the grow bag shows signs of contamination, act promptly. Unusual colors such as green, black, or yellow, strong odors, or growth that does not resemble healthy white mycelium may indicate mold or bacteria. If this happens, separate the bag from other grow bags right away.

Avoid opening a contaminated bag, as this can release spores into the air. In most cases, salvaging a contaminated crop is not recommended. Disposing of the bag helps protect your space and prevents contamination from spreading to other mushroom grows.

Can it produce multiple harvests?

Yes, the Shrum All-In-One Grow Bag Mini can sometimes support multiple harvests, often referred to as multiple flushes. Several factors influence this, including the mushroom species, growing conditions, and how you handle the first harvest.

After the initial harvest, the substrate may still contain enough moisture and nutrients for continued mushroom production. Later flushes often appear smaller or develop more slowly. To improve your chances, avoid disturbing the substrate during harvest and maintain steady humidity and airflow.

While multiple flushes are possible, results vary, especially with a mini grow bag designed for smaller, controlled grows.