This section is from the book "The Gardener's Monthly And Horticulturist V23", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
But seeds are funny things anyway. I sow Chinese Primroses, Cyclamens and Browallias and expect that every seed will germinate and grow up, cockscombs about half, mignonette the same, and so on. Sometimes one species will come up right away and another of the same genus not for a year afterwards: witness Corydalis aurea and C. nobilis. Many seeds come up irregularly, that is, a few may germinate in a week or two and others keep coming for months. For instance, in a box containing one-year-old Agaves from seed, I sowed some Torenia Fournieri last January. In four weeks afterwards I pricked off the full crop as then visible of Torenias, and repeatedly since then, and even now, May 1st, there are some in the box. The seeds were not of different ages; they were of last year's crop and gathered by myself. But old seed of Torenia is just as good as new. And this diversity in time of germination is apparent in most kinds of plants, though much more perceptible in some than others, and under artificial more than natural condi tions of raising.