Planting mushrooms with other vegetables.—In some cases gardeners follow the practice of inserting a forkful of manure here and there in the soil where other vegetables are grown under glass, and planting in it a bit of spawn.
Mushroom and vegetable house combined.—Some combine a mushroom house and house for vegetables in one, there being a deep pit where several tiers of beds for mushrooms can be built up, and above this the glass house where lettuce, etc., is grown, all at a temperature of about 60° F.
THREE METHODS SUGGESTED FOR GROWING MUSHROOMS IN CELLARS AND SHEDS.
First Method.—Obtain fresh stable horse manure mixed with straw used in bedding the animals. Shake it out, separating the coarse material from the droppings. Put the droppings in a pile two to three feet deep. Pack down firmly. When the heat rises to near 130° F., turn and shake it out, making a new pile. Make the new pile by layers of manure and loam soil, or rotted sod, one part of soil to eight or nine parts of manure. Turn again when the heat rises to near 130° F., and add the same amount of soil. When the temperature is about 100° F., the material is ready for the beds.
Preparing the beds.—Make the beds as described under the paragraph on pages 250–253, or use boxes. Place the coarse litter in the bottom three to four inches deep. On this place three to four inches of the cured material, pack it down, and continue adding material until the bed is ten to fifteen inches deep. Allow the beds to stand, covering them with straw or excelsior if the air in the cellar or shed is such as to dry out the surface.
Test the moisture content according to directions on page 255.
Watch the temperature. Do not let it rise above 130° F. When it is down to 90° F. or 70° F., if the manure has a "sweetish" or "mushroomy" smell it is ready to spawn.
Spawn according to directions on page 263.
Soil according to directions on page 266; cover bed with straw or excelsior.
Second Method.—Use horse droppings freed from the coarser material. Proceed as in first method.