Growing gourmet and medical mushrooms

Paul Stamets. Growing gourmet and medical mushrooms. - Ten Speed Press, 2000


1. Mushrooms, Civilization and History

2. The Role of Mushrooms in Nature

3.Selecting a Candidate for Cultivation

4. Natural Culture: Creating Mycological Landscapes

5. The Stametsian Model: Permaculture with a Mycological Twist

6. Materials fo rFormulating a Fruiting Substrate

7. Biological Efficiency: An Expression of Yield

8. Home-made vs. Commercial Spawn

9. The Mushroom Life Cycle

10. The Six Vectors of Contamination

11. Mind and Methods for Mushroom Culture

12. Culturing Mushroom Mycelium on Agar Media

13. The Stock Culture Library: A Genetic Bank of Mushroom Strains

14. Evaluating a Mushroom Strain

15. Generating Grain Spawn

16. Creating Sawdust Spawn

17. Growing Gourmet Mushrooms on Enriched Sawdust

18. Cultivating Gourmet Mushrooms on Agricultural Waste Products

19. Cropping Containers

20. Casing: A Topsoil Promoting Mushroom Formation

21. Growth Parameters for Gourmet and Medicinal Mushroom Species

Spawn Run: Colonizing the Substrate

Primordia Formation: The Initiation Strategy

Fruitbody (Mushroom) Development

The Gilled Mushrooms

The Polypore Mushrooms of the Genera Ganoderma, Grifola and Polyporus

The Lion’s Mane of the Genus Hericium

The Wood Ears of the Genus Auricularia

The Morels: Land-Fish Mushrooms of the Genus Morchella

The Morel Life Cycle

22. Maximizing the Substrate’s Potential through Species Sequencing

23. Harvesting, Storing, and Packaging the Crop for Market

24. Mushroom Recipes: Enjoying the Fruits of Your Labors

25. Cultivation problems & Their Solutions: A Troubleshoting guide


I. Description of Environment for a Mushroom Farm

II. Designing and Building A Spawn Laboratory

III. The Growing Room: An Environment for Mushroom Formation & Development

IV. Resource Directory

V. Analyses of Basic Materials Used in Substrate Preparation

VI. Data Conversion Tables






Generating Grain Spawn


rain spawn is the next step in the exponential expansion of

mycelial mass. The intent and purpose of grain spawn is to
boost the mycelium to a state of vigor where it can be launched into
bulk substrates. The grain is not only a vehicle for evenly distributing
the mycelium, but also a nutritional supplement. Whole grain is used

because each kernel becomes a mycelial capsule, a platform from
which mycelium can leap into the surrounding expanse. Smaller kernels of grain provide more points of inoculation per pound of spawn.
Millet, a small kernel grain, is used by many large spawn producers
because end-users like its convenience. Most small scale, gourmet
mushroom growers utilize organically grown rye or wheat grain. Virtually all the cereal grains can be used for spawn production. Every
spawn maker favors the grain which, from experience, has produced
the most satisfactory results.
The preferred rate of inoculation depends upon many factors, not
the least of which is cost. If a cultivator buys spawn from a commer-

cial laboratory, the recommended rate is often between 3-7% of
substrate mass. What this means is that for every 1000 lbs. of sub-

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