Plain english, because you are about to spend money on a grow and you deserve to know who benefits.
2020 Mushrooms is a small independent operation making free mushroom growing guides, tools and videos. There is no paywall, no course, and no newsletter you have to join to read anything here. To help cover the cost of keeping it running, some of the links on this site are affiliate links.
As an Amazon Associate I earn from qualifying purchases.
If you click one of our links to a product and then buy something, we may receive a small commission from the retailer. It comes out of the retailer margin, not out of your pocket.
You never pay a penny more. The price you see is exactly the price you would pay if you had found the item on your own, and the commission is the same whether you buy the cheapest option on the page or the most expensive one. We have no reason to push you up.
We only link to gear we would genuinely put on our own bench. A commission never buys a recommendation, and it never changes what we say about something. If a product is not worth your money we simply do not list it, no matter what it pays.
That cuts both ways. On our substrate calculator we tell you plainly that a pressure cooker is only needed for supplemented substrates like Masters Mix, and that you do not need one at all for coco coir or straw. Telling you not to buy something is worth more to us than the commission on selling it.
Where we recommend our own books, such as The Beginner’s Guide to Growing Mushrooms at Home, we are the author as well as the affiliate, and we will always say so on the page.
Links to Amazon are typically affiliate links. Links to our own guides, to our YouTube channel, to free tools like the substrate calculator, and to outside reference sources we cite for ratios and methods are not affiliate links and earn us nothing. When in doubt, assume a product link may earn us a small commission. That is the safest assumption for you to make, and it is why this page exists.
2020 Mushrooms is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Amazon and the Amazon logo are trademarks of Amazon.com, Inc. or its affiliates.
Everything on 2020 Mushrooms is educational. We write about cultivating edible and gourmet species: oyster, lion’s mane, shiitake, button and similar. Nothing we recommend changes the basic rules of growing safely. Sterilise or pasteurise properly, never eat a mushroom you cannot positively identify, and when a batch smells sour or wrong, throw it out. No affiliate link is worth a bad harvest. If you are new, start with the mistakes that kill most batches.
No. The price you see is exactly the price you would pay if you had found the item yourself. Any commission comes out of the retailer margin, not out of your pocket.
Links to Amazon are typically affiliate links. Links to our own guides, our YouTube channel, free tools such as the substrate calculator, and third party reference sources are not. If in doubt, assume any product link may earn us a small commission.
No. Nobody pays us for placement and no brand has ever been given a say in what appears here. A commission never buys a recommendation and it never changes what we say about a product.
Yes, and we say so plainly every time. Where you see a 2020 Mushrooms book we are the author as well as the affiliate, so we earn twice. That is exactly why we tell you up front rather than burying it.
If anything here is unclear, or you want to know whether one specific link earns us a commission, just ask. Last updated August 2026.
2020 Mushrooms