Prevent the formation of seed.
Once in three or four years divide the old clumps, and discard all but the strongest, healthiest portions of the roots. Reset in rich, mellow soil. Do this while the plants are at a standstill, early in spring, or in fall, after the work of the season is over.
THE GARDEN OF ANNUALS
N preparing the garden for annuals, the first thing to do is to spade up the soil. This can be done shortly after the frost is out of the ground. This is about all that can be done to advantage, at this time, as the ground must be allowed to remain as it comes from the spade until the combined effect of sun and air has put it into a condition that will make it an easy matter to reduce it to proper mellowness with the hoe or iron rake.
Right here let me say: Most of us, in the enthusiasm which takes possession of us when spring comes, are inclined to rush matters. We spade up the soil, and immediately attempt to pulverize it, and of course fail in the attempt, because it is not in a proper condition to pulverize. We may succeed in breaking it up into little clods, but that is not what needs doing. It must be made fine, and mellow,—not a lump left in it,—and this can only be done well after the elements have had an opportunity to do their work on it. When one comes to think about it, there is no need of hurry, for it is not safe to sow seed in the ground at the north until the weather becomes warm and settled, and that will not be before the first of May, in a very favorable season, and generally not earlier than the middle of the month. This being the case, be content to leave the soil to the mellowing influences of the weather until seed-sowing time is at hand. Then go to work and get your garden ready.
If the soil is not rich, apply manure from the barnyard or its substitute in the shape of some reliable fertilizer.
Do this before you set about the pulverization of the soil. Then go to work with hoe and rake, and reduce it to the last possible degree of fineness, working the fertilizer you make use of into it in such a manner that both are perfectly blended.
There is no danger of overdoing matters in this part of garden-work. The finer the soil is the surer you may be of the germination of the seed you put into it. Fine seed often fails to grow in a coarse and lumpy soil.