Part 2
Several kinds of roses are offered by the dealers for setting out in the spring. There are the pot-grown roses mentioned above--the only form in which many of the climbers may be readily obtained. Mail-order houses make a practice of sending out the Hybrid Perpetuals, Hybrid Teas and Teas also in this form of very young plants grown from cuttings under glass during the winter. Costing more, and surely far more dependable, are the field-grown roses that have originally been budded on Manetti or brier and, usually in two-year-old form, taken out of the ground the previous fall while dormant, to lie in cold houses until ready for planting. Such roses as these will surely bloom the first season and are far better equipped for the shock of being set into the open ground again than the pot-grown plants that have never had a taste of real garden life.
A word of warning might profitably be uttered against the cheap roses budded on _multiflora_ stock, grown in Holland and sold in some of the department stores. They are short-lived and very poor in comparison with plants on brier and Manetti. _Multiflora_ has been entirely discarded as a stock by English and Irish growers.
Roses on their own roots have the advantage of being cheaper, due to the saving of labor in striking cuttings rather than budding--one-year-old plants costing a dollar for six to a dozen; two-year and three-year-old bushes, which are, of course, far more desirable, cost more in proportion. Dormant, field-grown budded roses cost, in the two-year-old size, from thirty-five cents to a dollar each.
Before setting the plants examine each carefully and cut off the broken roots with a sharp knife, as well as all eyes that may appear on the root stock, in order to forestall suckers. The plants should be set immediately upon their receipt from the nurseryman, so that they will not become dried out. If they seem dry it may be well to puddle the roots in thin mud just before setting. Make the hole large enough to accommodate all of the plant's roots without crowding, remembering to put the budding point not less or more than two inches below the surface and with the roots spread out nearly horizontally, but inclining downward towards their ends and without crossing one another. This will not be an easy matter, for in shipment the roots will have probably been so compressed that they extend almost directly downward from the collar. After the plants have been firmly set and the earth carefully packed in around the roots, rake the soil to loosen it up over the whole surface. The soil will probably be moist enough at the time to need no watering.
With the pot-grown plants, the moist ball of earth that comes about the roots is carefully retained intact and placed in the hole prepared for the plant. Set the plant firmly in place by pressure with the soles of your shoes, give a generous watering and finally break up the surface of the soil with a rake.
It is absolutely essential to keep the surface of the ground loosened with a hoe and a sharp steel rake throughout the summer. After very hard rain loosen the soil as soon as it is dry enough to work, to conserve the moisture.
FERTILIZING
In striking contrast to the exquisite beauty of the rose is the food that we must give it in abundance if we would have the most healthy plants. But for the true rose enthusiast the turning over of a muck heap to find manure in just the right form, or the dilution of the by-products of the cow barn with water to make the best stimulant, have nothing about them that is in the least objectionable.
If the soil at our disposal is inclined to be rich in clay, we can probably do no better than incorporate well-decomposed stable manure with it, by raking it, well pulverized, into the surface in the early spring. In sandy or gravelly soils, however, cow manure or that from the pigsty will serve far better. It must be remembered that when properly set out the rose plant is comparatively shallow-rooted, so that this raking of fine old manure into the soil must be just that, and _not_ the deep digging of half-rotted manure into the bed with a spading-fork. The aim in the method advocated is to put the solid manure where the spring rains will carry it in time to the feeding roots, and in the liquid form in which it is readily assimilated.
The theory of this manurial feeding will make clear the fact that a proper application of liquid manure has practically all the advantages of the former method without its drawbacks. For solid manure, if applied to the beds in quantities sufficient to be of real value, has a tendency to keep the needed air out of the top soil, and to bring in its train an abundance of weeds that will be hard to exterminate. So that, with the exception of light sandy soils, where the humus is needed, we shall do well to feed the rose garden liquid nourishment.
The time when this stimulant will be most effective is in the months of May and June, when most of the plants are putting all their efforts into the forming buds. Withhold the liquid in dry spells, for it is most appreciated immediately after a good, soaking rain.
Avoid getting the manure on the foliage, and make sure that it errs on the side of weakness rather than strength. Suspending a burlap sack containing a bushel of cow manure in a barrel of water for two days, will give a solution that needs dilution with its own bulk of water. A half-gallon to a plant each week will be a sufficient normal feeding.
Immediately after dosing the beds go over them with a rake or prong-hoe and loosen up the surface to prevent evaporation.
A vital principle in feeding rose plants is one that seems to be overlooked instinctively by seven out of ten amateur gardeners. It is this: A strong-growing, healthy plant needs and will absorb a large quantity of liquid manure; a sickly plant, or one that is not yet well established, does not need and cannot absorb even the normal quantity of this food. Yet how often are we tempted to feed to excess this weakling and withhold food from that nearby sturdy bush, because the latter "doesn't need it." Just bear in mind the fact that we do not give burgundy to a puny child that is struggling against the effects of malnutrition, but that a healthy, growing boy can consume an astonishing amount of food and drink.
To review the year's activities in fertilizing: let us put a top dressing of rough manure over the beds in the fall, about three inches deep, with further protection where the climate demands it. In the spring we shall rake off the coarse portion of this covering, leaving the finely pulverized manure to be raked gently into the top soil if it needs this additional humus (the manure's food value will have been washed down by the winter's rain and snow). If our soil is clayey the whole top dressing will be hoed off. In May and June come the generous applications of the liquid manure, and for the Teas and Perpetuals that really do continue to flower, these applications may well be continued through the summer at less frequent intervals, leaving off at the end of August, let us say, so as not to encourage unnecessarily the late summer's growth of wood.
Although not many of us, in all probability, will meet the unusual condition of having for our rose gardens only an over-fertilized soil in a long-used garden, it may be well to mention the fact that such a soil will not produce good roses. Treatment with lime will help matters for a time, but if within the range of possibility we should remake the garden with virgin soil.
The use of nitrate of soda and like stimulants may be undertaken sparingly in the spring, but these are better left to those gardeners who have learned, possibly through disastrous experiences, how properly to use them.
PRUNING
The rose is one of those plants that seem to need the firm hand of man to direct them in the way they should grow. If left to their own devices, most of the highly cultivated roses revert quickly to lower types; they need the pitiless pruning-knife to spur them to their best endeavor.
It will readily be seen that severe pruning, as a general principle, tends towards greater beauty of individual blooms, while light pruning is conducive to a better rounded-out form of bush at the expense of the flowers. Or, again, the severe pruning gives quality of bloom as opposed to quantity of bloom.
Always cut back the plants severely when first setting them out--Teas and Hybrid Teas less than the Hybrid Perpetuals, and the climbers least of all.
Unreasonable as it may seem, the plants of vigorous habit of growth need less pruning than the less active ones.
Pruning may be started with the dwarf Hybrid perpetuals in March--leaving four or five canes three feet in length if large masses of bloom are wanted. The result will be a large number of small flowers. If, on the other hand, fewer and larger flowers are wanted, all weak growth should be removed and every healthy cane retained and cut back in preparation for the plant's development. The weakest should not have more than four inches of wood left on the root, while the strongest may have eight or nine inches. Always prune a cane about a quarter of an inch above an outside bud unless the cane is very far from the vertical, when an inside one should be left for the terminal shoot. See that the wood is not torn or bruised in the operation.
The pruning of Hybrid Teas and Teas had better be postponed until the first signs of life appear. The bark becomes greener and the dormant buds begin to swell. Dead or dying wood will then readily be noticeable and it may be removed. Remember that these two classes do not need such severe pruning as do the Hybrid Perpetuals; twice the amount of wood may safely be left if it seems promising.
Dormant rose plants bought in the spring will arrive from the growers already partly pruned. In general, from one-half to two-thirds of the remaining length of cane should be cut off when the plants are set out, removing entirely all bruised or dead wood. Bear in mind always, if your conscience revolts at such severe cutting, that the strongest dormant buds are nearest the base of the plant and it is these we want to force into growth to bear the prize blooms.
With the ramblers very little cutting is needed; merely cut back the shoots that seem to be outdistancing their neighbors by too much, and cut out entirely the dead canes.
The _rugosa_ is intended to be a bush rather than a strong, lean plant for prize blooms. Merely cut out old, dry wood and trim back the longer shoots to the desired form.
Use a first-class pair of pruning shears in order that the work may be done quickly and, above all, with clean cuts that show no tearing or abrasion of the bark.
PESTS
Once more let me repeat the fact that by far the most effective campaign against the insects and other pests that infest rose plants is to be found, not in sprayings and dustings, but rather in maintaining to the best of our ability a condition of health in the plant itself. Prevention here, as always, is better than cure. Nor can it be too strongly emphasized that the daily use of a powerful but finely divided spray from the hose will make life on the rose plant miserable for practically all of the parasites.
The following are the chief enemies that we may encounter in the rose garden. They are briefly described so as to be recognizable when found, and for the annihilation or keeping in check of each is given one of the many remedies. Practically every rosarian develops, after a time, his own pet formulae for these poisons, so that rose books will be found to contain a wonderfully varied assortment of weapons--so numerous in fact that one would think the army of rose pests could never live to continue their depredations another season.
_Aphis or Green Fly_
A small, pale green louse, winged or wingless, with a soft, fat, oval body apparently too big for its legs. A single aphis in five generations may become the progenitor of 6,000,000,000.
Tobacco smoke is an excellent weapon, or, if a spray is found more convenient to apply, a solution of 4 oz. of tobacco stems boiled for 10 min. in 1 gal. of soft water, will do. The same weight of quassia chips may be substituted for the tobacco. If the tobacco is used, the cheapest that can be bought is the best for the purpose. Strain the solution and add 4 oz. of soft soap while it is still hot, stirring well to dissolve the soap.
Another remedy--1 qt. of soft soap boiled in 2 qts. of soft water, adding 1 pt. of paraffin before cooling--is well recommended. It should be applied diluted with soft water to ten times its bulk. The paraffin acts as an astringent which, together with the soft soap, cleanses the plant of honey-dew, which is exuded by the aphis to protect its feet against cold and wet.
_Mildew_
A fungous disease that may appear when the rose plants are in a damp, shady or ill-ventilated location. Although some varieties are more susceptible than others to this disease, the rose garden located out in the open, where the air has unobstructed access, will not be troubled much by mildew. When the disease appears late in the autumn it need not be feared.
Dusting flowers of sulphur upon the foliage, taking care to reach the under side of leaves as well as the upper, and upon the ground about the plants, is a well established remedy. It will be found convenient to shake the powder from a baking-powder can, the end of which is punched with holes, if a regular powder gun is not at hand. Use the sulphur in the early morning, when the dew will help to hold it on the leaves, or else spray the plants with water beforehand.
_Rose Thrip_
A small, yellowish white insect with transparent wings, usually found on the _under_ side of the rose leaves. This pest appears in swarms and in an astonishingly short time turns the foliage yellow.
If the pest appears, spray the rose plants daily with a hose as suggested above. If this does not prove efficacious, dust the under side of the leaves with white hellebore in a powder gun. Whale oil soap solution, in the proportions of 5 oz. of soap to 1 gal. of water, is a very good remedy. It is easier to dissolve the soap if the water is hot.
_Rose Caterpillar or Leaf-roller_
Several kinds of caterpillars may appear, varying from one-half to three-quarters of an inch in length, and either green, yellow or brown in color. They have a habit of enveloping themselves in the rose leaves, or boring their way into the flower buds. In the latter case they are very apt to be overlooked.
Powdered hellebore will hinder their progress, but by far the most effective weapons are the finger and thumb--gloved, if you insist.
_Rose Chafer or Rose-bug_
This brown beetle, less than one-half inch in length, is one of the best-known rose pests. It is a slow-moving creature that appears suddenly in armies in the blooming season in June, and is the more annoying for the reason that it devotes its attention almost entirely to the flowers themselves.
Paris green, dusted over the plants, will kill the pest, but this poison has a disagreeable way of showing no intelligent discrimination in the choice of its victims. Really the only satisfactory method of attack is to knock the stupid creatures off the flowers into a tin of kerosene and then burn it.
_Rose Slug_
The larvae of a saw-fly which comes up out of the ground in May and June. The female makes incisions in the leaves and deposits her eggs, which hatch out in about two weeks. The slugs will eat an astonishing amount of leaf if not checked. They are about a half-inch long, green, and will be found on the upper side of the leaf.
Powdered white hellebore, dusted on the foliage, or the solution of whale oil soap mentioned for the Rose Thrip, will keep it in check.
_White Grub_
An underground enemy that feeds on the roots of rose plants. The withering or sickliness of the plant is sufficient reason to cause a thorough search to be made by lifting it. The grub, which is provided with six legs near the head, and which coils itself into a crescent shape when in repose, is particularly fond of strawberry plants, so it will be well to keep these some distance away from the rose garden.
There is no insecticide that will be effective, because of the underground point of attack. Lifting the plant and removing the grub is the only thing that can be done.
_Bark Louse or White Scale_
This appears when the rose bush is grown in a damp, shady place. It is snow white and individual scales are about one-tenth of an inch in diameter, irregularly round.
Cut off and burn badly infested shoots. Spray with 1 lb. of soap in 1 gal. of water in early winter and again in early spring. Weaker summer applications may be used also--1 lb. in 4 or 6 gal. once in three weeks throughout the season will reach all the larvae.
_Our Allies_
It is well to remember that there are friends of the rose in the lower animal world as well as enemies--the toad, lady-bug, ground-bird and swallow, particularly. The toad is sometimes brought by the English gardeners from a distance to help wage war on the pests; the lady-bug may be passed thankfully by when seen; and it may be well to try attracting the birds to the rose garden by scattering a few crumbs there daily--not too many, but just enough to arouse a real appetite for insect pests.
PROPAGATION
The propagation of his own stock is a task for which the expert is better fitted than the beginner for whom this book is written. Nevertheless, I doubt whether the amateur will pass through his first year of rose growing without wishing to make an attempt to multiply the stock of those roses which have with him been most successful, or to bud a choice variety from a friend's garden on the foster-parent stock for his own place.
Whereas in England the process of budding is carried on very widely and with fair success among amateur and professional rosarians alike, with us this means of propagation seems fraught with greater difficulty. Excepting in the case of varieties that do not readily root from cuttings, this latter method of propagation is generally adopted where roses on their own roots are desired.
The best time for taking cuttings from a plant is towards the end of the summer, when the ripe wood of the current year's growth will be available. Ten inches is a convenient length for the pieces and some rosarians feel that if a "heel," or portion of older wood, remains on the lower end there will be greater likelihood of rooting. Remove all but the two top leaves and set the cutting in a light soil, or even in pure sand, so that only the two upper buds are exposed. Leave the cuttings in the ground until the following autumn, when those that have taken root may be transplanted and set at a less depth in their permanent quarters.
Budding is a far more interesting process to carry through, and by it we may have sturdier roses on a stock like Manetti or brier. A very sharp knife is required, with some raffia for tying the bud securely into the stock. In the limited scope of this book I can but indicate very roughly the general procedure, and, indeed, budding is far more readily learned by watching a skilled rosarian do it than by reading many pages of description. Briefly, then, a bud, which may be found under any petiole, is carefully sliced, with its surrounding bark and backing of wood, from the half-ripe stalk of the variety to be propagated, leaving the petiole in place to serve as a handle. This is probably best done in July. After removing very gently the wood backing from the bark and bud, the latter are slipped into a T-shaped incision in the foster stock, this incision to be made through the bark to the actual wood of the stalk. The bud and its supporting bark are inserted between the wood and bark of the stock, the latter then being wrapped with a few turns of raffia to hold the bud in place. After a period of a month the bud will either have taken hold or failed, and the tie may be removed.
The rose plants that we buy already budded on Manetti or brier are produced in this way, excepting that the bud is inserted very low on the stock, so that the junction will be underground. This is the more desirable place for budding, insuring, if we nip the suckers as they may appear, a plant that above ground shows only the shoots of the desired variety.
Grafting is practiced only in the case of roses grown under glass, when the scions are cleft into stocks of Manetti or brier grown in pots for the purpose.
Layering is used as a means of increasing the stock only in the case of roses that do not readily strike from cuttings. It consists of bending down a long shoot so that a section of it may be pegged underground to take root.
Propagation by seed is limited to the efforts to obtain new varieties after cross-fertilization, and is a discouragingly slow and uncertain process.
WINTER PROTECTION
It will be a red-letter day for amateur rosarians when the existing favorites among rose plants shall have been so improved by cross-breeding that we can leave off all the winter overcoats of straw, brush and earth, with the happy knowledge that spring will find as many live plants in the rose garden as we rejoiced in during the previous season.
Although the Hybrid Perpetuals are, for the most part, sufficiently hardy to withstand an ordinary winter unprotected, it is still the part of wisdom to conserve their energy and health by hoeing up the earth about their bases and putting over all a top dressing of rough manure when protecting the Hybrid Teas and Teas. In the northern states it will be well to tie up the tops of the latter with straw or to surround the bed with a border of boards or wire netting, after winter has set in, and cover the plants with a thick blanket of leaves held down by brush. This protection should be removed gradually in March.
Where the winters are particularly severe, a still more certain precaution is to dig up the plants and lay them in well-drained trenches, covering them with earth and a further layer of leaves, straw or brush. The aim is not to protect the plants from freezing at all, but to prevent the alternate freezing and thawing that is so disastrous.
Another treatment for tender roses is to winter them in boxes of soil in a cool cellar. In case this is done, see that the earth is not allowed to dry out entirely. At planting time in the spring the dormant plants will be taken out, dipped in a bucket of thin mud and replanted in the garden.
While we may be willing for the present to take such precautions with the garden roses, most of us will not care to coddle the climbers to anything like this extent. Beyond hoeing up a mound of earth about the bases of these and top-dressing them, we shall let the climbers fight their own battles, and leave the result to the principle of the survival of the fittest.
LISTS OF DEPENDABLE ROSES