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Organic Chestnut Mushroom Grain Spawn
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| Skill level | Intermediate |
| Grow location | Indoors |
| Spawn shelf life | 4 months (refrigerated) |
| Certifications | USDA certified organic |
| Bag weight | 6 lbs |
| Fruiting temps | 60-70°F |
Our USDA-certified organic chestnut (Pholiota adiposa) grain spawn features a popular strain widely cultivated in Japan. It produces velvety, small-to-medium, delightfully speckled mushrooms with caps resembling the color of their namesake nut. When cooked, they have a woodsy aroma, a crunchy texture, and a rich, nutty, mildly-sweet flavor.
Chestnuts can be a bit finicky, but generally grow well indoors. They prefer cooler temperatures and are prone to drying out or stopping their growth if humidity is not maintained when the mushrooms are still in their early stages. However, when they grow successfully you can expect significant and commercially-viable harvests. Note that chestnuts do not reliably produce subsequent flushes.
"5 of the Best Chestnut Mushroom Recipes"
Recommended use:
- Chestnut grain spawn can be used for indoor production using sawdust-based sterile substrate.
- Do not use grain spawn for log inoculation.
- This is not a mushroom grow kit. Chestnut 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.
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- 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
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Temperature 60-70°F | 15-21°C Humidity (Phase 1: Primordia) 98-100% Humidity (Phase 2: Fruitbody) 88-95% CO2 Sensitivity (Phase 1: Primordia) 500-1,000 ppm CO2 Sensitivity (Phase 2: Fruitbody) <1,000 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.
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Chestnut mushroom grain spawn can be mixed into sterilized hardwood sawdust to create chestnut substrate blocks.
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.
Recommended reading:
'Growing Gourmet and Medicinal Mushrooms' by Paul Stamets
'Organic Mushroom Farming and Mycoremediation' by Tradd Cotter
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If you don't plan to use immediately, you can refrigerate your spawn for up to 4 months.
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"5 of the Best Chestnut Mushroom Recipes"
For those who enjoy the distinct nutty flavor of chestnut mushrooms, we recommend frying them up with butter and garlic or adding them to your favorite creamy soup or pasta dish. As with other mushrooms, chestnut mushrooms require thorough cooking. However, given their lower moisture content, they do not require “sweating” in the pan.
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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.
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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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Customer Reviews
5.0 Based on 8 Reviews
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L
01/02/2024
LE
United StatesI recommend this product
Would deffinately purchase
I am a beginner and this was my first experience growing Chesnuts in the Boomer Bin. I followed the instructions and 3 weeks later I have a beautiful layer of mycelium. So exciting to peek into the bin every day and see the changes. Its hard not to take the top off the bin. Patience......
01/06/2024
North Spore
Thanks so much for sharing! If you need help with anything, please reach out.
KH
11/21/2023
Keith H.
United StatesI recommend this product
Great Spawn
The chestnut grain spawn colonized my bags really quickly. Very happy with the beautiful fruiting bodies. And so were my customers who bought them. Thanks!! Daly Greens
12/01/2023
North Spore
Thanks for taking the time to share your experience! We're so glad the chestnut spawn is working out for you. Our team is here to help if you ever need anything!
KG
11/11/2023
Karin G.
United StatesEye-catching
Chestnut mushrooms are so cute! A real eye-catcher. Very popular at the market.
11/17/2023
North Spore
Great pic, Karin! We're so glad you're enjoying the chestnuts. Our team is here if you need anything!
KG
02/16/2023
K. G.
United StatesBeautiful Chestnuts
Chestnuts take a little longer to fruit, especially compared to oysters, but they are always well worth the wait. Very popular at the farmer's market.
EO
06/04/2021
Eric o.
United StatesChestnut grain spawn
My experience has always been great with north spore I've ordered several types of grain spawn and it's all been healthy.
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