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






5. Sealing the sawdust spawn bags. Few
steps are as critical as this one. The simple me-

chanical act of sealing sterile airflow bags can
have extraordinarily disparate results for the
success of the spawn incubation process. All
other steps in this process can be perfectly executed, and yet failure to achieve a continuous
seal can be disastrous.

I attempt to create a positively inflated
bubble at the time of sealing. (See Figure 129).
Although the filter patch allows the transpiration of gases, it is not at a rate that causes the

bag to noticeably deflate, even with gentle
squeezing. When this bubble environment is
created at the time of sealing, two advantages
are clearly gained. First, the grain spawn mixes
and rotates easily through the sawdust, making

shaking easy. Secondly, each bag now has a
voluminous plenum, a mini-biosphere with an
Figure 125. Sawdust spawn of Reishi (Ganoderma
lucidum). Note inflated atmosphere within bag.

must be well separated for this technique to resuit in a consistent rate of inoculation for each
bag. Through trial-and-error and experience, a
highly rhythmic and exact amount of spawn is
approportioned amongst the ten sawdust bags.
If there are, for instance, 4 rows of 10 bags
in front of the laminar flow bench, then a right-

handed person would inoculate bags starting
from the far left, rear bag. Each bag to the right
would then be inoculated until the back row is
finished. In turn, the third row would then be
inoculated with the next gallon of grain spawn,

again from left to right. In this fashion, the
hands of the inoculator can not jeopardize the
sanctity of the upstream bags. To inoculate the
first row nearest to the face of the micron filter

would endanger downstream bags from the
debris coming from the inoculator's hands and!
or undetected contaminants from a spawn jar.

Figure 126. Universal hand position used for opening bags, lifting petri dish lids, and removing spawn

jar caps.

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