Our blocks are 100% produced and sourced from North American ingredients.
Each block contains Hardwood, bran, and mycelium (that’s the root structure of
mushrooms). All 100% organic. All manure free. All yummy.

Every block & every flush will differ, however each block can flush 2-4 times! Lower yields suggest low humidity, so it’s important to maintain proper humidity levels. 

Shiitake & Lions Mane – 85% Humidity, consistently 

Oyster – 90% or more prior to pinning, then reduced to 70% after pins develop

Yes! All 3 mushroom blocks tend to grow prior to set up. The mycelium is just excited to start growing. Simply remove the pins (shiitake) or remove the exterior growth, taping up any holes (oyster & lions mane), then proceed with setting up the block.

The instructions are a guideline and may need to be tweaked depending on your climate. Ensure your block has access to light, fresh air exchange and proper humidity. 

Blue/green mold is not normal. It can indicate contamination and the block must be discarded at this point. To prevent mold growth, limit pooling water in the bag after soaking and provide fresh air exchange (but not too much that the block dries out). Shiitake should soak for 4-8 hours, no longer. Oyster can soak for 12-24 hours.

Low yields can suggest that the environment was off, however it might have been too wet or too dry. We recommend drying out the block for 2 weeks, then attempting the 2nd flush. 

The Lions Mane mushroom should not be misted directly. It’s important to mist inside the humidity tent, but do not mist the mushroom itself. Yellowing indicates maturity, so you want to harvest before yellowing begins. 

If there is too much block exposed, you might have a ton of pins start growing, but then they ‘abort’ (dry out), never reaching maturity. At this point, remove the pins and wait for new growth. It’s also important to maintain humidity for this mushroom. They will not produce if the block dries out, for even 1 hour. A hygrometer is highly recommended for this block.

The shelf life is about 2 months, but can be extended to 6 months if left in the fridge. Cold temperatures slow down mycelium colonization, extending the shelf life of your block.

Lions Mane – Make 1 ‘X’ cut in the whitest area of the block. After a couple days of misting, make a 2nd ‘X’ cut in another area where you notice mycelium colonizing. Do not exceed 2 cuts and do not cut into the substrate

Oyster – Make 1 4” slice, diagonally across the block. Do not cut into the substrate

No. For Lions Mane, leave the top part of the bag unrolled to help the mycelium colonize, but roll it back down and secure it to the block when you’re ready to start growing. 

For Oyster, always make sure that the top of the bag is secured down. Limit the exposure of the block so that energy is focused on growing the mushrooms through the cuts you made, not at the top of the block where they can become trapped. 

Products tend to ship within 48 hours of the order placement and can take 3-5 days for shipping.

We allow returns unless otherwise noted on the product page. Return apparel items must be unwashed, unworn, clean, and like-new.  Music items must be unopened and like-new. Returns must be sent back within 60 days of the original order delivery date.

Please ship your return item(s) to the following address:

SCP Merchandising

Attn: Returns

950 N Raddant Rd

Batavia, IL 60510

Please include a note with your name and order number.

Please ensure that you save the tracking information for your return shipment. If you do not have tracking information we are unable to assist you with a return or exchange. We are not responsible for your return item until it arrives back at our warehouse.

Kindly note, while we allow returns, we will not refund the shipping costs of your order. We reserve the right to deny a refund pending the condition of the item(s) returned. SCP is not responsible for shipping costs incurred for returning unwanted items.

Returns must be sent back within 60 days of the order delivery date.

We reserve the right to deny a return pending the condition of the item(s) returned.