Dreer's Vegetables under glass (1896) Dreer's Vegetables under glass . dreersvegetables00dree Year: 1896 CHAPTER III. THE HOT BED. The hot bed is merely a modified cold frame; an improved cold frame ; a heated cold frame, if the con- tradiction be pardona- ble. The same pattern of sash is employed, but the board sides of the frame are either higher above ground or deeper below ground. Hot beds are not often made in long ranges like cold frames, as the forcing house is more economical for large operations, as will be explained hereafter. The hot bed will, however, always have a place in pri
Dreer's Vegetables under glass (1896) Dreer's Vegetables under glass . dreersvegetables00dree Year: 1896 CHAPTER III. THE HOT BED. The hot bed is merely a modified cold frame; an improved cold frame ; a heated cold frame, if the con- tradiction be pardona- ble. The same pattern of sash is employed, but the board sides of the frame are either higher above ground or deeper below ground. Hot beds are not often made in long ranges like cold frames, as the forcing house is more economical for large operations, as will be explained hereafter. The hot bed will, however, always have a place in private gardens. It will be observed that the board sides of the hot bed are planned for depth ; for holding a considerable quantity of manure underneath the soil. It is sometimes recommended that the manure be two or two and a half feet deep : we believe that one foot of properly prepared manure, well tramped, is quite sufiicient. Thus, if we have one foot of manure, four inches of soil, and eight inches of air, the box must be made two feet deep. In filling the bed it is well to put in fifteen inches of manure, as it will speedily settle to twelve inches, and will leave just about enough air space under the glass. The hot bed is usually made ready in February or March, in the latitude of Philadelphia. It is well to sink the box into the earth for half its depth, and heap the earth up against the boards on the outside, as a protection against cold winds. Hot beds may be made up in December and 19
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