. The nursery-book; a complete guide to the multiplication of plants ... Gardening; Plant propagation. STRATIFYING SEEDS. 15 at the top. In one of these a thermostat (c) is placed, which controls the flow of gas at the jet beneath, and in the other a thermometer (d) may be placed to show the temperature of the water in the ; 3. THE HANDLING AND SOWING OF SEEDS AND SPORES. Preparatory Treatment of Seeds.—Many seeds demand some treatment preparatory to sow- ing. Nearly all hard and bony seeds fail to germinate, or at least germinate very irregularly, if their contents are allowed to
. The nursery-book; a complete guide to the multiplication of plants ... Gardening; Plant propagation. STRATIFYING SEEDS. 15 at the top. In one of these a thermostat (c) is placed, which controls the flow of gas at the jet beneath, and in the other a thermometer (d) may be placed to show the temperature of the water in the ; 3. THE HANDLING AND SOWING OF SEEDS AND SPORES. Preparatory Treatment of Seeds.—Many seeds demand some treatment preparatory to sow- ing. Nearly all hard and bony seeds fail to germinate, or at least germinate very irregularly, if their contents are allowed to become thoroughly dry and hard. The shells must also be softened or broken, in many cases, before the embryo can grow. Nature treats such seeds by keeping them con- stantly moist under leaves or mold, and by cracking them with frost. This suggests the practice known to gardeners as stratification, an operation which consists in mix- ing seeds with earth and expos- ing them to frost or to moisture for a considerable time. Stratification is practiced, as a rule, with all nuts, the seeds of forest trees, shrubs, the pips of haws and often of roses, and in many cases with the seeds of common fruits. Seeds should be stratified as soon as possible after they are mature. Small seeds are usually placed in thin layers in a box alternating with an inch or two of sand. Sometimes the seeds are mixed indiscriminately in the sand, but unless they are large it is difficult to separate them out at sowing-time. The sand is often sown with the seeds, however, but it is difficult in such cases to distribute the seeds evenly, and. 14. sprouting Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bailey, L. H. (Liberty Hyde), 1858-1954. New York, The Macmillan Co.
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Keywords: ., bookcentury1900, booksubjectgardening, booksubjectplantpropagati
