This section is from "The Horticulturist, And Journal Of Rural Art And Rural Taste", by P. Barry, A. J. Downing, J. Jay Smith, Peter B. Mead, F. W. Woodward, Henry T. Williams. Also available from Amazon: Horticulturist and Journal of Rural Art and Rural Taste.
The Purple Candy-Tuft, (I. umbellata,) an engraving of which we give, is an annual plant, growing to the height of about a foot, with spreading branches and large heads of purple flowers. This species is a native of Candia, and receives its name partly from this fact and partly from the form of the flowers. Seeds were taken to England about the year 1590. From that time it has been a general favorite in British gardens, and should be grown by all lovers of flowers, for its beauty and easy culture. It grows well on almost any rich soil, if not too moist; and as it will not bear transplanting well, it should be sown where it is to remain. Sow from the 1st to the 15th of May. Superior flowers will be obtained by soaking the ground occasionally with liquid manure, readily obtained by placing the cleanings of the fowl-house in a barrel with water, and keeping on hand a constant supply.
GERMAN TEH WEEK STOCK.
When the plants are going into flower, the heads should be examined; and if too numerous, they should be removed. By this treatment, and occasionally loosening the ground around the plants, and keeping it free from weeds, flowers have been grown three inches across, most beautifully colored, being of a very dark purple on the outside, and softening to nearly white in the center. The great points are thinning the flowers gradually, as they increase in size, and supplying their roots with abundance of rich food when they are going into flower. By this mode of treatment much finer flowers may be grown than those usually seen in our gardens. The Lilac Candy-Tuft is a fine variety, of a beautiful lilac color.
The Rocket Candy-Tuft (I. corona-ria) is a splendid species, growing two feet high, branching widely, each plant producing three to five racemes of flowers from six to ten inches long, and the center one even longer than this, if properly cultivated. Cultivation the same as the Purple.