This section is from the book "The Gardener's Monthly And Horticulturist V24", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
For the third time 1 have succeeded in flowering this valuable plant in greenhouse temperature, and as many persons own it who only have a greenhouse, with your consent, Mr. Editor, I shall briefly state how I do it.
About the end of March I shake all the soil off the plants, preserving the roots as well as possible, place an inch of drainage in large pots, covering with some rough material - tobacco stems suit well. Grasp as many of the bulbs by the leaves as the pot will hold, each clear of the next a fourth of an inch, then work the soil in among the roots, tapping the pot on the bench as the work proceeds ; by so doing the soil is made firm about the roots without the pounding-stick, which in this case would break the roots. Common potting soil is used, as rich compost will rot the roots before they commence growing. Three stakes are placed around the plant, on these a string to support the leaves ; water with warm water, and the operation is completed. Pots of any size may be used, from six inches up. After they get fairly to growing use liquid manure freely until the end of August; by that time they should have made the season's growth. Rest them by withholding water, only giving enough to keep from wilting. In a month or six weeks they will send up their flower stems ; then resume with liquid manure while the flowers last, afterwards watering sparingly.
The growth of young leaves will surely damp away at a temperature of 45°. The foliage must be kept clean at all times by the frequent use of the syringe in summer and the sponge in winter.