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An unheated, outdoor, covered plant house, generally covered withglazed sash; but sometimes prepared paper or cloth is used. No ma-nure is used in the soil at bottom of a cold frame. Cold frames are mostfrequently used as a transition space in the hardening-off process. A soil made by mixing loam with decaying organic compounds and some-times inorganic fertilizers, allowing nitrification and oxidation toproceed; but preventing plant growth until a very rich soil is produced A term applied in planting to a situation having impure air orrestricted feeding area for roots, or both. A plant which bears its seeds in a cone. With the exception of theginkgo, the larches, and the bald cypress practically all conifersevergreen needle-bearing plants, as the pine, spruce, and fir. (SeeEvergreen.) |
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