Growth Parameters

Spawn Run:

Relative Humidity: 95-100%

Duration: 14-21 days, + 7 day rest

Fresh Air Exchanges: 0-1

Light Requirements: n/a

Primordia Formation:

Initiation Temperature: 50-55° F. (10-13° C.) Relative Humidity: 98-100% Duration: 5-10 days. C02:< 1000 ppm

Fresh Air Exchanges: 4-8 per hour or as needed Light Requirements: 500-1000 lux Fruitbody Development:

Temperature: 55-65° F. (13-18° C.) Relative Humidity: (90) 94-98% Duration: 4-7 days C02:600-1500 ppm

Fresh Air Exchanges: 4-8 per hour or as needed. Light Requirements: 500 100 lux. Cropping Cycle:

Two crops, 7-10 days apart.

Recommended Cropping Containers: Polypropylene, autoclavable bags, bottles, and/or trays. This mushroom grows well horizontally or vertically.

Yield Potentials: My yields consistently equal 1/2-1 lb. of fresh mushrooms from 5 lbs. of moist sawdust/chips/bran.

Harvest Hints: I especially like this mushroom when it grows to a fairly large size, but prior to maximum sporulation I gauge the thickness at the disc as the criterion for harvesting, preferring at least 2 inches of flesh.

Form of Product Sold to Market: Fresh, sold only in Japan and Taiwan at present. Nutritional Content: Not known to this author.

Medicinal Properties: I know of no published studies on the medicinal properties of Hypsizygus ulmarius. Anecdotal reports, unpublished, suggest this mushroom is highly anti-carcinogenic. Much of the research has been done in Japan. Mushrooms in this group, rom the viewpoint of traditional Chmese medicine, are recommended for treating stomach and intestinal diseases. Flavor, Preparation & Cooking: The same as for most Oyster mushrooms. See recipes.

ITthVt of rt^e even the youngest specimens of Pleuwtus ostreatus or Pleurotus puhnonanus.

anTPhisPmush^m iTe'aorlary for many reasons. When the caps grow to the broa ly convex stage L^ral ffov^h continues, with an appreciable increase in mass. (In mo. cultivated mushrooms Then he caD becomes broadly convex, this period signifies an end to an increase in biomass, and m ks he b^nn g of e appLonmeiit of tissue for final feature development, such as gill exten-^ etc Ifcuiivators pickthe mushrooms too early, a substantial loss in yield resuls Not only is tf Xw spor bad substantially less than most Pleurotus species, but the quaht of its fruitbody far tZZZeZ P. puhnonarius, P. djamor, P cornucopia*** a les. In my opinion, only P. ayngiiandH. r«^ compare favorably with H. ulmanus in flavor and texture.

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