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🍄 Cultivate your own gourmet mushrooms effortlessly—grow smart, grow fresh!
Out-Grow Sterilized Rye Berry Mushroom Substrate is a premium, ready-to-use 1-pound bag of fully sterilized rye berries designed for indoor mushroom cultivation. Featuring a durable self-healing injection port, it ensures contamination-free inoculation and supports rapid mycelium development. With a shelf life of up to 4 months, this substrate offers convenience and reliability for both novice and experienced growers aiming for consistent, high-quality mushroom harvests.





| ASIN | B07CWHYKT2 |
| Best Sellers Rank | #151,727 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #300 in Plant Grow Bags |
| Brand Name | Out-Grow |
| Capacity | 1 quarts |
| Color | Brown |
| Customer Reviews | 4.0 out of 5 stars 1,934 Reviews |
| Finish Types | Unfinished |
| Included Components | Plant Hanger |
| Indoor Outdoor Usage | Indoor |
| Item Weight | 1 Pounds |
| Manufacturer | Out-Grow LLC |
| Material | Plastic, Polyester |
| Material Type | Plastic, Polyester |
| Mounting Type | Floor Standing, Tabletop, Wall Mount |
| Number of Levels | 1 |
| Number of Pieces | 1 |
| Other Special Features of the Product | Lightweight |
| Pattern | Solid |
| Plant or Animal Product Type | Berry |
| Planter Form | Bag |
| Product Style | Modern |
| Shape | Rectangular |
| Special Feature | Lightweight |
| Style | Modern |
| Theme | Mushroom Cultivation |
| UPC | 616576243125 |
| Unit Count | 1 Count |
J**Y
Excellent product and price
In less than 3 weeks I've seen tremendous mycelium development and no signs of contamination. Bags are VERY thick, the inoculation ports are super thick and self seal well. I did notice a huge amount of dulling on the syringe needle after a single puncture through the port. Like I said they are VERY thick. Be careful not to push too hard and puncture through the back of the bag. The small size and volume of the bags has allowed me to inoculate 5 bags using only 10mL of spores. The breathing port has a nice thick filter material, so follow the instructions included with the bags on how to introduce oxygen and prepare your grain bags before attempting inoculation. They arrived well sealed, with no visible humidity or moisture present on the inner bag surface, appears to contain the perfect amount of sterile internal moisture for quick mycelium development using only 2mL of injected spore solution. So far I'm very happy and have had very good results. A great tip, inoculate your grain bags when the moon is in the sign of scorpio using the sidereal zodiac system. You will be surprised how fast the mycelium will develop and establish itself.
B**M
Large mushroom grow bag
Nice large clean bag of grain for growing your mushrooms! I recently bought two of these and there has been no problems at all with either one. Also bought one of the smaller bags offered on Amazon, and there has been no problem with it either. The larger bags are definitely easier to handle and you wont accidentally stick your syringe needle through as you could in the smaller bags. Guess it’s a personal thing. The important thing is you being careful. I take an alcohol soaked paper towel and wipe rubber gloves, my hands, the syringe, needle package, work area….everything. Wipe it all down. With a clean work area and no draft or anything to stir up the air, you are now ready. Wipe rubber gloves again once they are on your hands. Don’t forget to wear a mask! I like to also have ready a new clean large gallon ziplock bag to keep the purchased grain bag in while the micillicm begins to grow, just an extra precaution. Also have some sterile white breathable medical tape. Upon carefully removing the hypodermic needle from its pack, you will need to carefully remove the protective syringe cap from it. Do not touch the now exposed tip, set it down on your clean work area. Taking the needle I advise you to use a torch or lighter to it once you have screwed it onto the syringe…. Red hot is advised. Wipe any black soot from the needle with your alcohol paper towel. Now it is ready to safely proceed. Have a piece of the new clean tape 1/2 way attached to the new grain bag at the port site. Once you inject the contents press the other half of the tape against the port location as you remove the needle. This should prevent any contamination from sneaking in. I like to move the needle around carefully while it is in the bag port to help move the spores around. I also like to carefully and lightly move the grains around in the bag once they have been injected. This will make the spores more broke up and will be less likely to clump. Which isn’t a problem just another personal preference. The micillicm seems to spread quicker when doing this. Do this for several days or a week. My grains are now showing clean white micillicm after 2 1/2 weeks. The bags will be fully growing 30 days from now, or less. Hope this is helpful. If you are clean and careful you will grow mushrooms! Happy growing, God bless
M**E
Disappointing product
Grains come way to moist with many of the rye berries burst. One of the two bags I ordered on my second purchase from them had a wretched smell coming from it before I even had a chance to inoculate (noticed it when I opened the product and shook/“inflated” bag as per instructions before inoculating). My first order from them I purchased 6 BRF jars and 1 rye bag. I was happy with that order. The jars were as expected. No contamination and pleased with the results of shredding and spawning to coir. I was initially happy with the rye bag with the first order which is why decided to buy two more but that first bag has since stalled at about 95% colonized and is showing a ton of “myco piss” or yellow droplets up against bag. I suspect it’s fighting a bacterial infection so we’ll see what happens. I hadn’t grown mushrooms in many years and went with these due to the convenience of them. Only wish they had worked. Sadly I can not recommend these bags but I can recommend the BRF jars
K**O
PERFECTED !!!
1st things 1st! I’ve order 6 pounds 3X’S every single one of my bags were perfected! The mycelium came out with no problems at all! 2nd! A lot of ppl who post bad reviews its only because they try to get into mushroom growing (mycology) learning based off of YouTube , tiktok etc. the whole www. Is cyber security, so when you post certain things they don’t want ppl to know , they red flag and take it down, so if there’s 3 steps to growing mushrooms they will take down 1 out of 3 of those videos . Leaving you to believe it’s not your fault. When it is, bc you relied of a controlled a.I. app mood director to guide you. Education cost , you will be charged in anything you do. With that being said when this product arrives you have to treat it with the upmost respect ! From how and where you store it . To temp. Control . Contamination awareness. If you don’t clean your home or work area thoroughly daily? You will contaminate this product without even trying ! This is bc your body is used to the bacteria’s you don’t disinfect, but the substrates and spores are not. Leaving you to think it’s the sellers fault ! These bags are very reliable bc of the breathing port! Their very sturdy allowing mycelium to breath while keeping contaminates away(again) you still need to store in a control temp of 70 degrees sterile area. The injection port is very reliable and study !!! Their doing us a huge favor bc trying to sterilize the rueberry alone is a major job . Ventilation to the bag is another ! I’ve bout 18 bags ! I highly recommend outgrow and this product !!!
A**T
I like these
I like these . Some seem like dry or slow to start but patience is key.
B**N
Awesome spawn bags
These rye bags are always fantastic. I have very little to no issues with colonization. These are my definite go to. Spawn. Bags keep up the good work
E**A
Too dry
It’s too dry and the grain won’t rupture when squeezed.
L**R
Great great great
Perfect moisture, myco starts growing quickly and spreads at an even rate. Has the air exchange and a good injection port. I've used a few of these and never had any contamination, never had bacteria or mold growth. It is a great value perfect to get you off and running on your mushroom adventure. It is only a pound of rye, not 3 like most folks use in the YouTube videos, but it works for me and my smaller monotub. Invest in these for growing your fungi and you shan't be disappointed. I used the word shan't so I seem smarter and you'll trust my opinion more!
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