The Book of Roses

by Francis Parkman

[Original]

Next to soil and situation, pruning is the most important point of attention to the rose-grower. Long treatises have been written on it, describing in detail different modes applicable to different classes of roses, and confusing the amateur by a multitude of perplexing particulars.

One principle will cover most of the ground: Weaklygrowing roses should be severely pruned: those of vigorous growth should be pruned but little. Or, to speak more precisely, roses should be pruned in inverse proportion to the vigor of their growth.

Much, however, depends on the object at which the grower aims. If he wishes for a profusion of bloom, without regard to the size and perfection of individual flowers, then comparatively little pruning is required. If, on the other hand, he wishes for blooms of the greatest size and perfection, without regard to number, he will prune more closely.

The pruning of any tree or shrub at a time when vegetation is dormant acts as a stimulus to its vital powers. Hence, when it is naturally vigorous, it is urged by close pruning to such a degree of growth, that it has no leisure to bear flowers, developing instead a profusion of leaves and branches. The few flowers which it may produce under such circumstances, will, however, be unusually large.

The most vigorous growers among roses are the climbers, such as the "Boursaults" and the "Prairies."

These require very little pruning: first, because of their vigor; and, secondly, because quantity rather than quality of bloom is asked of them. The old and dry wood should be cut wholly away, leaving the strong young growth to take its place, with no other pruning than a clipping-off of the ends of side-shoots, and a thinning-out of crowded or misshapen branches. In all roses, it is the young, well-ripened wood that bears the finest flowers. Old enfeebled wood, or unripe, soft, and defective young wood, should always be removed.

Next in vigor to the climbers are some of the groups of hardy June roses; such, for example, as those called the Hybrid China roses. These are frequently grown on posts or pillars; in which case they require a special treatment, to be indicated hereafter. We are now supposing them to be grown as bushes in the garden or on the lawn. Cut out the old wood, and the weak, unripe, and sickly shoots, as well as those which interfere with others; then shorten the remaining stems one-third, and cut back the side-shoots to three or four buds. This is on the supposition that a full mass of bloom is required, without much regard to the development of individual flowers. If quality rather than quantity of bloom is the desideratum, the pruning both of the main stems and of the side-shoots must be considerably shorter.

Roses of more moderate growth, including the greater part of the June, Moss, Hybrid Perpetual, and Bourbon roses, require a proportionally closer pruning. The stems may be cut down to half their length, and the side-shoots shortened to two buds. All the weak-growing roses, of whatever class, may be pruned with advantage even more closely than this. Some of the weak-growing Hybrid Perpetuals grow and bloom best when shortened to within four or five buds of the earth. The stronggrowing kinds, on the contrary, if pruned thus severely, would grow with great vigor, but give very few flowers.

The objects of pruning are threefold: first, to invigorate the plant; secondly, to improve its flowers; and, thirdly, to give it shape and proportion. This last object should always be kept in view by the operator. No two stems should be allowed to crowd each other. A mass of matted foliage is both injurious and unsightly. Sun and air should have access to every part of the plant. Six or seven stems are the utmost that should be allowed to remain, even on old established bushes; and these, as before mentioned, should be strong and well ripened, and should also be disposed in such a manner, that, when the buds have grown into shoots and leaves, the bush will have a symmetrical form. In young bushes, three, or even two, good stems are sufficient.