Custom Order from the Lab


Sawdust Spawn

5 lbs. of mature mushroom mycelium on organic supplemented sawdust substrate

5 lbs. organic sawdust spawn
Average Lead Time: 3-4 weeks
$45 - $60 suggested donation

Sawdust spawn is versatile. It can be used outdoors for starting mushroom patches and inoculating logs, and indoors to spawn bulk substrates or as a stand-alone "fruiting block" for simple, small-scale mushroom cultivation.

Our hardwood-based substrate is lovingly mixed by hand in small batches using only wholesome, natural and organic ingredients. High in nitrogen and packed with nutrients, this wood-lover recipe is formulated to maximize biological efficiency and keep the mycelium thriving for many consecutive harvests.

Ingredients: Spring water, wild alder sawdust, organic wheat straw, organic worm castings, organic coconut coir, vermiculite, organic wheat bran, gypsum, chalk, potash.

We do our best to begin custom orders within 1-2 business days. We will inoculate your sawdust spawn, incubate it under observation, mix it when needed and send it when the mycelium has fully enveloped its substrate. We strive to produce spawn that is healthy, vigorous, clean and arrives in a state of active growth, ready for use.

The whole process usually takes 3-4 weeks, though this may vary depending on the species and the phase of the moon. We'll reach out with an ETA as soon as we receive your order, we'll keep you in the loop about its progress and we'll send you a shipment notification with tracking as soon as it's ready.

Info & Terms

We are committed to providing exceptional customer service.

How It Works

For both privacy and security, we do not process credit cards on this website. Instead, after you place an order, you will receive an email with a link to pay using a secure, trusted third party (or instructions if paying with cash). Unpaid orders will be cancelled after 7 days (30 days for cash orders).

We do our best to process invoices and ship orders within 1-3 business days.


We do not sell or distribute any personal customer data to any third party for any reason.

Cancellation Policy

Excluding custom orders, your order may be cancelled for a full refund at any time until they have been shipped. Once an order is shipped it will not be refunded.

Return Policy

Due to the perishable nature of live biological specimens, we do not accept returns. In the rare case that you should find, with reasonable assurance, that our products were compromised in any way upon arrival, we will promptly replace them at no cost to you. We do not offer refunds after products have been shipped.

Lost or Damaged Packages

When an order is shipped, we provide tracking information. If a package is lost or damaged in transit, we will work with the postal carrier to recover the cost and send a free replacement. However, we are not responsible for orders which are lost or misplaced after they have been delivered by the carrier.


We reserve the right to refuse service to anyone for any reason.