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Oyster Mushroom Cultivation in Barns, High Tunnels, and Greenhouses (BF 153)

Bf153OysterMushroomMaking good use of farm buildings for mushroom production

Mushrooms are an emerging niche crop with many benefits and offer a unique and highly desired product.

With a bit of practice, oyster mushrooms can easily be grown in a variety of locations and on many different substrates including straw, coffee grounds, and more.

This course trains new and experienced farmers in the background, techniques, and economics of farm scale commercial production. Students will learn the basic biology of mushrooms, cultivation techniques, proper conditions for fruiting, management needs, and harvesting and marketing mushrooms.

Note: In addition to weekly online readings, presentation, and discussion, participants will receive spawn in the mail and get to try mini mushroom experiments on their tabletop at home.


Target Audience

The course is for new farmers, or experienced farmers seeking to diversify their operations. Growing mushrooms as a viable economic enterprise will be stressed, though techniques can also be applied at the hobby scale. Mushroom farming is an easy topic for beginners with some experience farming and managing crop systems.


Course Objectives

At the completion of this course, you will:

  • Understand of the basics of mushroom production, harvesting, and marketing
  • Be able to complete a basic marking plan and budget for a mushroom enterprise
  • Understand the logistics of management, sales, and legal issues related to mushroom farming



The bulk of the course happens on your own time, with discussions, readings, and assignments in MOODLE, our virtual classroom. To add to the experience, webinars will be woven into the online interface of the course to allow you to meet on a weekly basis to learn from outside presenters and ask questions to address your farm issues in real time. If you miss one, they are always recorded and posted for later viewing. Access details will be posted in MOODLE once you have registered and logged in.



March 1 – April 5, with Webinars each Tuesday evening from 6 – 7:30pm



Steve Gabriel, Agroforestry Specialist for Cornell Small Farms Program, co-owner of Wellspring Forest Farm, and co-author of Farming the Woods. 

Willie Crosby, owner of Fungi Ally

Course Outline

Week 1: Introduction & Mycology 101
Topics: Navigating moodle, course overview, mushroom biology, cultivation vs wildcrafting, meet the mushrooms

Week 2: Oyster Inoculation on treated organic matter
Topics: Sourcing materials, treatment methods, management

Week 3: Setting up your grow room
Topics: Growing needs, materials, costs, etc

Week 4: Managing oysters for quality and quantity
Management, pests, how to force fruiting of mushrooms, when to harvest, storage and drying mushrooms

Week 5: The business side of mushroom growing
Topics: Wholesale vs retail sales, CSAs, restaurants, packaging and delivery, value added products, labeling and legal considerations

Week 6: Beyond just food: other benefits of oyster cultivation
Topics: home propagation, health and medicinal benefits, mycoremediation


Course fee is $250, plus $30 for a table-top mushroom spawn kit that will be sent directly to you for the hands-on portion of the course, so $280 total. Sign up a month in advance to get a $25 discount on each course, plus a $50 total discount off registration for 3 or more courses.

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We are also offering other mushroom courses in-person which can be viewed at the Cornell Mushroom Event Page.