Image from page 90 of "Commercial rose culture under glass and outdoors; a practical guide to modern methods of growing the rose for market purposes" (1919)
Authors: Holmes, Eber
Subjects: Rose culture
Publisher: New York, A. T. De la Mare company, inc.
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress
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are allowed to develop on the second. After the middle of March, with sunny days and a nighttemperature of 58° or 60°, a crop that is well advanced maybe hurried along somewhat if it is late for a certain date (suchas Easter) by taking advantage of the sun heat, keeping thesteam on rather longer in the morning, giving just a little airduring the warmest part of the day, say from 10 a.m. toabout I p.m., and starting with the steam again early inthe afternoon. A light spraying overhead two or three timesdaily with clear water during the warmest part of each sunny GENERAL CULTURE 87 day will protect and develop the foliage, and will hurry alongthe flowers. There is no danger of hurting well establishedand growing stock by this practice if extremes and suddenchanges are avoided. The more sun heat we get every day,combined with active fire heat during the remainder of thetwenty-four hours, the more water we can use with goodresults. It should always be borne in mind, however, that a crop
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Fig. 1, is a green bud, actual size, which will take at least ten daysunder the best conditions before it can be cut for market. In three orfour days this bud will have advanced to the second stage, as shown inFig. 2, and will be showing color. Four days later it will be of the sizeof Fig. 3, and be well colored, and three days after this stage is reachedit may be cut. 88 COMMERCIAL ROSE CULTURE of Roses, like a great many other things that we grow, will beof a better quality if it is not unduly forced. If the limit ofwisdom is passed in forcing the plants along it will be done atthe expense of color and substance of bloom. The illustration on page 87 may be of help to the beginneras showing the time required to perfect flowers after the budsare of a certain size, during the latter part of March, andunder the best conditions in regard to sunny days, and asteady supply of steam at night. It applies to the averagevarieties generally grown today. It would be well for everygrower to make
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