Spawn Storage, Use and Terms

Please read immediately!

Thank you for your mushroom spawn order from Field & Forest Products. Please read the following for information regarding the care and handling of your spawn.

With little exception, spawn comes to you double bagged. Although we dislike using all that extra plastic, the additional bag ensures that if a spawn bag breaks during shipment the spawn will remain entirely usable. If an inner spawn bag breaks, keep it within the confines of the outer bag, and loosely tie close the top so the spawn can breath. Spawn should be used as soon as possible. Even properly stored spawn will lose vigor over time, therefore, we recommend following the storage guidelines below. If you choose to use older spawn, you should consider using a higher inoculation rate to compensate for loss of vigor.

Grain Spawn should arrive double bagged. Remove the outer bag upon receiving. Keep spawn at room temperature if you will be using it in the next few days. For longer storage, refrigerate the spawn for up to 3 months. If you use a partial bag of spawn, store the remaining spawn in its original bag, folding the top down above the filter patch and clipping to secure. Pink Oyster grain spawn CANNOT be refrigerated and should be used within one month. Also, Pink Oyster grain spawn will not have a heavy white mycelium like other oysters.

Plug Spawn should arrive double bagged. Remove the outer bag upon receiving. Store the bag of plugs in the refrigerator unless you will be using them within the next few days. Most plug spawns are frosty white or coated with a white to brown leathery "mold," all indicating healthy growth. Plug spawn will store refrigerated for up to 6 months.

Sawdust Spawn should arrive double bagged. Remove the outer bag upon receiving. Refrigerate spawn if not using within a few days. Sawdust spawn can be kept for up to 6 months if refrigerated. Leaving spawn at room temperature for too long can result in mushroom growth inside of the bag. Please note: Almond Agaricus sawdust spawn CANNOT be refrigerated, but can be kept at room temperature for up to 6 months.

Thimble Spawn is packed in its own bag. Thimbles are very quick to dry out, so keep the tray in its bag and refrigerated until you're ready to use it. Thimble spawn will store refrigerated for 4-6 weeks. Tips on handling: The combination foam cap and sawdust that comprises each thimble can be a little fragile. While the thimble should come out in one piece, the foam caps can become separated from the sawdust plug with incorrect handling or with young spawn. Apply the following technique: Place one hand underneath the tray and splay your other hand on top of the tray over the thimbles you want to remove. Apply light pressure with your index finger on the bottom of the tray under each plug, and gently "pop" up the thimble, removing it with your other hand. With a little practice, you can pop dozens up quickly, and collect them in a container for easy access while inoculating. If the foam caps continue to separate from the plugs, you can let the spawn knit to the cap a little more by leaving it out at room temperature for 4-7 days. If the cap does come off, you can also simply place it into position after the spawn plug has been inserted into the hole. Make sure it fits securely!

Peg Spawn should arrive double bagged. Remove the outer bag upon receiving. Keep spawn refrigerated until ready to use. Pegs will keep for up to 6 months if refrigerated.

PLEASE NOTE: Pink Oyster and Almond Agaricus spawn CANNOT be refrigerated. Both varieties should be stored at room temperature until ready to use.

Returns: Tools and other merchandise are returnable only upon the discretion and approval of Field and Forest Products, Inc. An approved return authorization from Field and Forest Products, Inc. is required for return of these items. In the event that a return is authorized for any tool purchased, a restocking fee will apply.

If an order is delayed, lost, or returned to us as a result of an entry error by Field and Forest Products, Inc., we will reship the order at our expense.

If an order is delayed, lost, or returned due to an error by customer (i.e., incorrect address provided, omission of different "ship to" address, etc.), customer will be responsible for additional shipping costs to reship order. If order is not returned to Field and Forest Products, Inc., customer will be charged for replacement merchandise as well. If customer chooses to cancel the order instead, we will refund merchandise cost, once shipment has been returned to us by carrier. Shipping costs will not be refunded.

Replacements: PLEASE INSPECT YOUR ORDER IMMEDIATELY UPON ARRIVAL! Spawn damaged in shipment will not be replaced unless customer notifies us within 24 hours of receipt. Purchases of books, tools, and other merchandise are considered final and are returnable only upon the discretion of Field and Forest Products, Inc. An approved return authorization from Field and Forest Products, Inc. is required for return of these items.

Cancellations: If customer chooses to cancel an order prior to shipment, order will be cancelled in full and refunded full order amount if payment has been processed, with the exception of volume order discount commitments and custom orders.

Volume Order Discount Commitments: If order is part of a multiple shipment agreement involving volume discounting and the commitment has not yet been met, customer will be responsible for paying the balance due resulting from readjusting the billing difference based on actual number of bags purchased.

Custom Orders: Custom orders may only be cancelled if production of spawn has not yet occurred.

Grain Spawn

Grain Spawn

Plug Spawn

Plug Spawn

Sawdust Spawn

Sawdust Spawn

Thimble Spawn

Thimble Spawn

Peg Spawn

Peg Spawn



Limited Warranty & Liability: We warrant that our spawn is vigorous, and capable of producing mushrooms under proper growing conditions. Mushroom cultivation is farming and depends upon factors outside our control, such as substrate quality, environmental conditions and maintenance, Field and Forest Products cannot and does not guarantee success in terms of mushroom production.

Field and Forest Products' spawn, cultures or other products are not to be sold, transferred, marketed, or assigned, without our prior written consent. Customers may only use, re-isolate, or further propagate our spawn/cultures for their own personal use and/or consumption. Please note that spawn used for this purpose or used in a way not recommended by Field and Forest Products will not be covered under warranty. Use of Field and Forest Products' name, product names, trademarks, photographs, product descriptions, written materials, and/or any other copyrights without prior written consent is also strictly prohibited.

Volume Discount Pricing: Volume discount pricing for spawn applies to orders placed at one time, not accruing over a period of time or season. A large order may be broken up to ship over a maximum period of 8 weeks. Standing orders that meet our highest volume discount quantity when placed are exempt from this time restriction. Blewit, Bleu Foot, Almond Agaricus, and Shiitake block strain spawns do not qualify for mix and match volume discounting (but each do have their own volume discount pricing structure).