. Bulletin of the Department of Agriculture. Agriculture; Agriculture. .^l^^^u 1 BULLETIN No. 962 Contribution from tiie Bureau of Plant Industry WM. A. TAYLOR Chief. Washington, D. C. PROFESSIONAL PAPER August 12, 1921 THE PRODUCTION OF THE EASTER LILY IN NORTHERN CLIMATES. By David Griffiths, Hortlciiltiirist. Office of Hortivultural and Pomological Investif/ations. CONTENTS. Page. The choice of method of propaga- tion 1 Production on a seedling l)asis 3 Production on n vegetative basis 16 Methods of pvopagation 21 Controlling bulblet formation 24 Soil for Easter lilies 24 Soil fertilit
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. .^l^^^u 1 BULLETIN No. 962 Contribution from tiie Bureau of Plant Industry WM. A. TAYLOR Chief. Washington, D. C. PROFESSIONAL PAPER August 12, 1921 THE PRODUCTION OF THE EASTER LILY IN NORTHERN CLIMATES. By David Griffiths, Hortlciiltiirist. Office of Hortivultural and Pomological Investif/ations. CONTENTS. Page. The choice of method of propaga- tion 1 Production on a seedling l)asis 3 Production on n vegetative basis 16 Methods of pvopagation 21 Controlling bulblet formation 24 Soil for Easter lilies 24 Soil fertility 25 Page. Storage of bulbs 26 Sizes of merchantable bulbs 27 Varietal selections 28 The Easter lily in beds and lx>rders_ 20 Lengthening the flower season out of doors :*.(• Reducing the cost of heat in forcing. 30 Resistance to cold 31 THE CHOICE OF METHOD OF PROPAGATION. IT IS ASSUMED that the grower of Easter lily stocks will start with seedlings. He ma}^ sow seed each season, but it is more likely that he will grow seedlings the hrst year and propagate vegetatively thereafter. When vegetative propagation is chosen the plants must be hardy enough to go througli tlie winters safely out of doors. It has been amply demonstrated that the lily is sufficiently hardy in the latitude of Washington, D. C\, to live through the winter either with or without a little mulch. The probability is that it will be found to be hardy very much farther north. If the grower goes back to seed each year it makes no ditference whether the species is hardy in his locality or not, for the plants will not be in the open ground during the winter. The stock plants may be of any standard commercial variety, or any two standard varieties may be crossed. Good results have been obtained by cross-pollinating the varieties Giganteum and Har- 48307 -21-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of
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