Anyone who has a snug, warm shed, may have a good mushroom house, but it is imperative that the floor should be dry, and the roof water tight. Of course a close shed, as a tool house or a carriage house, is better than an open shed, but even a shed that is open on the south side, if closely walled on the other sides, can also be made of good use for mushroom beds. While open sheds are good enough for beds that yield their crop before Christmas, they are ill adapted for midwinter beds. The temperature of the interior of a mushroom bed should be about 60° during the bearing period, and the temperature of the surface of the bed 45° to 50° at least; if lower than that the mycelium has a tendency to rest, and the crop stagnates. Now this temperature cannot be maintained in an open shed, in hard frosty weather, without more trouble than the crop is worth. The beds would have to be boxed up and mulched very heavily. And even in a close, warm shed, protection in this way would have to be given, but the bed should not be under the penetrating influence of piercing winds and draughts. The mushroom beds should therefore be made in the warmest parts of the warmest sheds.
The beds should be made upon the floor and as much to one side as possible, so as to be out of the way, and in form flat on the ground, or rounded up against the sides of the shed; in the latter case the house should be well banked around on the outside with litter or tree leaves or earth, so as to exclude frost from the lower part of the walls, and thereby prevent the manure in the beds from getting badly chilled. The beds should be made deeper in a cool shed than in a cellar or warm mushroom house, so that they may retain their heat for a long time.
Shelf beds should not be used in unheated sheds, because of the difficulty in keeping them warm in winter. As a rule, shelf beds are not made as deep as are those upon the floor; hence they do not hold their heat so long. When cold weather sets in it is easy to box up and cover over the lower beds to keep them warm, but in the case of shelf beds, that are exposed above and below, it is more trouble to protect them sufficiently against cold than they are worth.
Generally speaking, the term shed is applied to unheated, simple wooden structures; for instance, the wood shed, the tool shed, a carriage house, or a hay barn. But we often use the name shed to designate heated buildings as the potting and packing sheds of florists. Were it not that these heated sheds are simply workrooms, and where there is a great deal of going out and in, and, consequently, draughts and sudden and frequent fluctuations of temperature, the treatment of mushroom beds made in them would be the same as that advised for regular mushroom houses; but as the circumstances are somewhat different the treatment, too, should not be the same. A warm potting shed is an excellent place for mushroom beds. Here they should be made under the benches and covered up in front with thick calico, plant protecting cloth, or light wooden shutters, to exclude cold currents and sudden atmospheric changes, and guard against the beds drying too quickly.
Author Resource:
Jackson Forrest is a mushroom growing enthusiast and runs the popular http://www.MushroomGrowingSecrets.com website where he offers the best-selling ebook "How to Grow Mushrooms for Fun and Profit". Get your copy today!
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