- Organic Italian Oyster Mushroom Grain Spawn
Organic Italian Oyster Mushroom Grain Spawn
|Grow location||Indoor & outdoor|
|Spawn shelf life||4 months (refrigerated)|
|Certifications||USDA certified organic|
|Bag weight||6 lbs|
Our USDA-certified organic Italian oyster (Pleurotus pulmonarius) grain spawn features a strain with a deliciously mild flavor and earthy aroma. Italian oyster mushrooms are thicker and meatier than blue oyster mushrooms, and their brown frilled caps can grow quite large. They are great for beginners and are reliable indoor year-round producers. If kept in the right conditions, they will yield substantial first, second, and even third harvests (making them an ideal commercial variety!)
Italian oyster grain spawn can be used for indoor cultivation year round. When used for outdoor cultivation, Italian oysters are generally cold tolerant and fruit prolifically in early spring or late fall.
- Italian oyster grain spawn can be used for indoor production using sawdust or straw or outdoors using straw or wood chips. It is also ideal for growing in buckets.
- Do not use grain spawn for log inoculation.
- This is not a mushroom grow kit. Italian oyster grain spawn must be combined with a substrate in order to fruit.
Upon receiving your spawn:
Remove it from the shipping box as soon as possible. Then, unfold the top of the bag, making room for air space. It's also important to check and confirm that the filter patch is not obstructed. This will help the organism breathe and continue to thrive!
Scroll down for specifications, growing, and storage guides.
- Weight: Approximately 6 lbs
- Hydration: Average of 47%
- Bags: Gusseted 2.2 mil polypropylene
- Filter: High efficiency .2 micron
- Inoculation Rates: 6 lb. bag of grain will inoculate between 120-165 lb. sterilized sawdust, and 100-130 lb. pasteurized straw
- Sterilization method: Commercial grade autoclave sterilized
Temperature 65-75°F | 18-24°C Humidity (Phase 1: Primordia) 95-100% Humidity (Phase 2: Fruitbody) 85-95% CO2 Sensitivity (Phase 1: Primordia) <800 ppm CO2 Sensitivity (Phase 2: Fruitbody) <800 ppm
- Primordia - The earliest recognizable stage of fruitbody development. Also known as “baby mushrooms” or “mushroom pins.”
- Fruitbody - A fully grown mushroom, the reproductive structure of the organism in which the spores are produced.
- CO2 sensitivity - When CO2 levels are too high, yields will decrease, stems will become long and stringy, caps will be small, and/or growth will halt.
Oyster mushroom grain spawn can be mixed into sterilized or lime pasteurized substrates including but not limited to hardwood sawdust, straw, and coffee grounds.
Note: Grain spawn must be mixed with bulk substrate before you can fruit it. If you are new to growing mushrooms, we recommend purchasing a book on mushroom cultivation.
'Growing Gourmet and Medicinal Mushrooms' by Paul Stamets
'Organic Mushroom Farming and Mycoremediation' by Tradd Cotter
Oyster spawn can be spread in chopped straw or wood chips as shown in the video below! Making outdoor beds is one of the easiest methods for growing any type of oyster mushroom.
For our complete mushroom beds pamphlet, click here.
Be sure to use clean, untreated products when making outdoor beds.
If you don't plan to use immediately, you can refrigerate your spawn for up to 4 months.
Italian Oysters can easily replace button mushrooms in most recipes and pair well with many cuisines and flavors. Like all oyster mushrooms, they retain water and may develop a viscous texture when undercooked. If you prefer a firm or dryer texture, continue to cook them until their liquid has reduced and cooked off and they begin to brown.
Our grain spawn is USDA certified organic and made using organic cultures from our own culture bank. It contains a blend of locally sourced, organic, and non-GMO ingredients from farms in New England and North America.
If you’re going to consume home-grown mushrooms, make sure to cook your fresh mushrooms thoroughly with heat. If it is your first time eating this species, it is best to start with a small amount to check for allergies, even if cooked.
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This is an easy to grow, very prolific strain. It's fast fruiting and the mushrooms are big, beautiful and meaty. It's a favorite at the market.
Thanks so much for sharing, Karin! Your mushrooms look incredible! Please reach out if you ever need anything.
Nice clean spawn!
I like the millet for spawn. It has a lot of inoculation points and colonization is quick. We are a commercial farm that occasionally needs to supplement our operations with spawn from other farms. Notthspore never disappoints.
Thanks for taking the time to share your experience, Byron! We really appreciate your support.
I bought these along with yellow/golden and pink oyster grain spawn. This variety is my favorite of the three. Big caps and nice stems that easily "shred" into almost noodles. They have a great flavor!
Thanks for sharing, Bart! If you need help with anything, please reach out.
Purchased Italian oyster spawn doing V grow in buckets method in my home. It's been one week down we're still waiting family is excited to produce these are oyster mushrooms. Loving North Spore content on IG that's been very helpful with lives! Can't wait to order more, the mushrooms in the bucket idea is fantastic. However I may try a different technique, maybe I'll try the straw hamper technique either way I have options and we're so excited! thanks North Spore for all you do!
North Spore has a customer for life!
Had an issue with my Italian Oysters which didnt grow (may have been bugs). I sent them an email ON THE FOURTH OF JULY and it was immediately answered!! I ended up asking a ton of questions to the knowledgeable representative and got everything answered (even sent them photos of my grow area). Replacement spawn was sent out the next business day!! I was so impressed that, that day I purchased plug spawn and had ALL my questions answered on the new spawn too. Amazing customer service, knowledge, they stand behind their product, and they are a company that will help you even on a holiday so that you can succeed! I would never risk ordering from any other company!!