Commercial Wholesale Grain Spawn

We currently offer fully-colonized, USDA certified organic grain spawn to commercial mushroom growers at wholesale prices. (You can find a list of available strains by scrolling to the bottom of this page.)

To qualify for this program, you agree to our minimums, order terms, payment terms, discount terms, change & cancellation terms, and shipping terms.

To place a commercial wholesale grain spawn order, email spawn@northspore.com.

• Grain spawn ships in 6 lb. bags, in cases of four.
• We offer weekly and bi-weekly (every other week) shipment options.
• The minimum order requirement is 4 bags every other week.
• We can typically accommodate small weekly or bi-weekly order adjustments of our more popular strains of up to 12 bags per species.
• For any order requesting 12 or more bags of any one species, we have an automatic 2-4 week lead time, depending on the species requested.

• Order confirmations, adjustments, and cancellations will be made via the order change form included in the weekly or bi-weekly email.
• Emails will be sent on Wednesday, and forms must be submitted by 12 PM on Friday.
• We CANNOT accommodate change requests made after 12 PM on Friday.
• For order changes requesting 12 or more bags of one species, we have an automatic 2-4 week lead time, depending on the species requested.

• Invoices will be sent Friday evening. Please review your invoice on Friday to ensure that everything looks correct.
• If you notice any mistakes, please let us know right away so that we can correct the invoice before your order is packed.
• We offer net 7 payment terms, which means your invoice will be due the following Friday.
• We allow for up to two unpaid invoices at a time. If you have two unpaid invoices, we will stop sending scheduled shipments.
• Late payments must be submitted before the 12 PM Friday order submission deadline in order to receive an order the following Monday.
• Please set a calender reminder if you think this is something you might forget!

• Orders are always shipped on Monday, with the exception of holidays, to avoid any delays that may result in damaged spawn.
• Customers can choose their own shipping options, however, we strongly encourage expedited shipping options, and/or insulated shipping during the warmer months.
• North Spore is not responsible for any spawn that is damaged due to hot or cold shipping temperatures. To prevent spawn damage due to temperature fluctuations, insulated shippers are available for purchase.
• Insulated shippers are an additional $15 dollars per 4 bag shipper and $1 per ice pack. (We recommend 2-3 ice packs, depending on transit time.)
• Spawn that arrives damaged (due to packing or shipper mishandling) or spawn that arrives contaminated can either be replaced or credited on your next order.

• Given the deep discounts and priority handling of commercial orders, free shipping over $150 does not apply.
• Additionally, discount codes and loyalty points do not apply to commercial orders.

'Harbor Blue' blue oyster (Pleurotus ostreatus) NSPO1: This is a very productive commercial strain from Pennsylvania. It produces dense clusters with dark gray/blue caps. It produces best in cooler temperatures but also performs well during the warmer months. Averages 1-2 lbs first flush off of 5lb supplemented sawdust blocks but will also produce off sterilized straw substrate.

'Popham Oyster' elm oyster (Pleurotus ostreatus) NSPO2: Our Elm Oyster strain; produces highly branched clusters of off-white/tan mushrooms that yield well in both cold and warm temperatures.

'Snow White' snow oyster (Pleurotus ostreatus) NSPO3: Produces very dense clusters that are pure white in color. This strain performs very well during the coldest months of the year but is not recommended for warm weather production.

'Shmoyster' blue oyster (Pleurotus ostreatus) NSPO15: An alternative Blue Oyster strain. Darker and denser than our PO1 with a more impressive first flush but a lower tolerance for warm temperatures. A serious oyster with a serious name.

'King Blue' blue oyster (Pleurotus ostreatus) NSPO19: High-yielding, thick-stemmed "King Blue" from Mossy Creek.

'Black King' oyster (Pleurotus spp.) NSPsp.1: A cross between strains of Oyster and King Trumpet from Japan, the Black King produces brown, marbled caps and soft stems but fruits in warmer temperatures than King Trumpets. A favorite of chefs and mushroom cultivators alike.

'Northern Sun' golden oyster (Pleurotus citrinopileatus) NSPC2: A commercial Golden Oyster strain and customer favorite. Known for having denser fruit bodies that are less brittle than other citrinopileatus strains.

'Rose' pink oyster (Pleurotus djamor) NSPD1: This Oyster species produces large flowery clusters of bright pink mushrooms. This strain is very fast growing and tolerant of non-sterile cultivation techniques. Fruits best at warmer temperatures and is not recommended for cold season production. Cannot be refrigerated.

'True Italian Oyster' (Pleurotus pulmonarius) NSPP1: Dense Oyster species that produces wavy brown-capped mushrooms with a relatively low moisture content. They are a great farmers' market oyster and add nice variety to mixed mushroom boxes.

'Stephen King Trumpet' oyster (Pleurotus eryngii) NSPE1: Commercial mushroom strain originating from Japan that produces mushrooms with large stems and small tan caps. This strain is more tolerant of warm temperatures but still fruits best in cooler weather.

'Willow Pioppino' (Agrocybe aegerita) NSAA1: A commercial Pioppino culture that produces flushes of velvety-capped mushrooms with snappy stalks. These mushrooms are relatively sturdy and are not too brittle for distance shipping or delivery.

'Jelly Roll' namkeo (Pholiota nameko) NSPN1: A good indoor producer that will make copious amounts of the nameko mushroom's quintessential gelatinous coating when grown with proper humidity. Needs cooler temperatures to fruit!

'Lion's Brain' lion's mane (Hericium erinaceus) NSHE1: Commercial strain. Very productive forming dense pom pom fruit-bodies. Fruits best in cooler temperatures, 1/2-1lb yield on first flush off of 5lb supplemented sawdust with consistent subsequent fruitings over several months.

'Tree Beard' lion's mane (Hericium erinaceus) NSHE3: A showy strain of Lion's Mane that produces commercially viable flushes of less uniformed and highly segmented fruiting bodies, adding variation to your Lion's Mane boxes.

'Comb Tooth' lion's mane (Hericium corraloides) NSHC2: A commercially productive strain of Comb Tooth. Unlike the dense 'pom poms' of hericium erinaceus, Hericium corraloides produces large, coral-like fruiting bodies with branching spines.

'207' shiitake (Lentinula edodes) NSLE1: A new name for a favorite commercial strain for indoor block production of Shiitake. Yield averages .75-1.5lb first flush off of 5lb supplemented sawdust blocks. Fruits best at colder temperatures and tends to produce mushrooms with smaller stems and large caps. Our culture is direct from Belgium and retains the highly desired characteristics of this strain.

'Acorn' shiitake (Lentinula edodes) NSLE2: A variation on commercial indoor Shiitake genetics. We've had similar results from this strain as from our '207' strain listed above. We like having multiple varieties of the same species to ensure genetic diversity and reduce the odds of crop failure.

'Speckled Chestnut' (Pholiota adiposa) NSPA1: Commercial strain from the West Coast. This species produces dense clusters of scurfy tan-colored mushrooms. A visually striking mushroom that is highly prized by chefs. First flushes average 1-2lbs off of 5lb supplemented sawdust blocks.

'Rudolf' reishi (Ganoderma lucidum) NSGL1: Our favorite indoor Reishi strain. Produces dense and colorful antlers when grown indoors in bags. Best grown using filter patch bags with minimal air exchange.

'Basic Beech' (Hypsizygus tessellatus) NSHT1: Our favorite brown beech mushroom strain. Great for commercial production.

'Birdie' hen of the woods (Grifola frondosa) NSGF1: Commercial strain from the West Coast. Hen of the Woods or "maitake" is slow and difficult to grow but prized both for its distinct taste and medicinal properties.