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قراءة كتاب Making a Garden of Perennials
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vegetable garden, or placed in a large flat pile about two feet high while still loosely spread. Melons, squash, pumpkins or similar sprawling vines may be grown in it. For each plant dump about one-half a wheelbarrow of good soil on the top, level and sow in it, or set out plants, if the seedlings are started elsewhere. The roots of these plants like the loose run the open manure allows. In extreme dry weather the growing squash or pumpkins should be well watered. In the fall this manure has become fine in texture and makes a splendid winter's mulch for snowdrops, crocus, etc.
Do not be in a hurry about removing the winter's covering when the first warm days of spring appear. More damage is done in early spring than in settled cold weather. It is the alternate freezing and thawing that does the most damage, and the surface water lying over the crowns of plants, which the frozen ground underneath does not allow to go down. I have seen roots of shallow-rooted plants, Lobelia cardinalis for instance, growing in clayey soil, lying on the surface of the ground in spring—pried out by soil expansion. Part of the covering may be removed quite early but enough should remain to shade the ground.
SUMMER MULCHING
Shallow-rooted plants like the cardinal flower (Lobelia cardinalis) and the tall, fall-flowering hardy phloxes, dislike the hot sun beating down on their roots. Being surface rooters, and at the same time fond of moisture, they suffer when the surface soil is dried out. They should have a summer mulch to intercept the radiation of moisture from the soil.
The spent manure I mentioned as fine for covering bulbs, is splendid for this purpose and as it is of the same color as the soil, its presence is hardly noticeable; besides it adds humus. Almost any open material may be used, that will not offend our ideas of tidiness in appearance. Grass clippings from the lawn-mower may be used.
Some plants are late in appearing above ground in the spring, Platycodons for instance, and there is danger of their being dug up by impatient amateurs who have either forgotten their presence or imagined they were dead and the ground vacant. It is well, therefore, to place in the fall some cane stakes at each plant or in a row around a group of this class to indicate their presence. I also place stakes at each lily as they generally occupy open spaces between perennials, and I seldom wish to disturb them if it becomes necessary to remove one of the perennials.
With few exceptions—peonies and the gas plant, for instance—perennials need dividing and resetting every two or three years, which should be done in the early fall or early spring, but never when the soil is very wet, because in the subsequent manipulation of the soil to replenishing its food supply, it should be dry enough to break up into fine particles. The Japanese anemone should be replanted only in the spring. It is in bloom and in active life in the fall. The best way to proceed is to work one section at a time—say a ten-foot strip. Cut back the foliage, take up the plants and lay them aside, covering with burlap or some material to keep the sun and wind from their roots. Then dig the bed up, deeply, and add some well-rotted manure, rake smoothly and replant. While it is probably best not to set the same plants back in the same position occupied before, it may be done, for if the soil has been well worked up it is apt to have changed its position. Then take up another section and do the same. In the meantime all large roots are divided. Some may be pulled apart, but more often they have to be cut through with a sharp spade or a butcher knife. Discard all evidence of decay and use only the healthy outer rim, possessing well-developed roots. They generally show the stalk buds for next year's growth. Three to five of these buds will make a good plant. Sometimes, in the case, perhaps, of a cherished but not over-robust larkspur, you find part of the original root decayed, but if it has a few good roots attached to it, dust powdered sulphur on the decayed part—it often checks decay—and you may eventually restore your pet to a healthy condition.
If you want a delightful recreation and lots of fun, and would like to possess some plant producing a flower entirely new in color or form, and, certainly in your estimation finer than any your rival neighbors have ever seen, make a reserve bed in some sunny spot and raise hybrid delphiniums. In fact any one possessing a good collection of perennials should have a reserve plantation to draw from in order to fill up gaps that will be found in the main bed after any hard winter. It is especially useful for keeping up a stock of that charming but short-lived perennial, the columbine (Aquilegia), which seldom can be depended upon after the second year. I am speaking of the finer forms.
These hybrid delphiniums, or garden larkspur, possess the blood of two or more species and as a result are inclined to "sport," producing flowers of various forms and colors, entirely different from those of the parents. The word "sport" as used by gardeners is applied to any plant that displays a marked contrast in foliage, flower, form or habit of growth, from the type or normal aspect of the original species. The well-known golden glow is a good example, being a double form of the single-flowered Rudbeckia laciniata, a tall member of the Black-eyed Susan family, and known as one of the coneflowers. The flower head of the type is composed of two parts—the outer row of yellow "ray florets," which is not a part of the flower proper, except that it might be likened to the fringe that borders a curtain, and the dark brown cone in the center, which is composed of numerous minute, individual flowers like the dandelion, each perfect and capable of producing seed. Nature is slyly freakish at times, and in this instance she changed the individual flowers into ray florets. Fortunately some observing flower lover saw this one original plant, for undoubtedly the freak occurred in one plant only, and transplanting it to his garden, eventually gave to the floral world the now common golden glow. If not noticed by some one, the plant would have lived its allotted term and died unknown to the world, for it produces no seed.
The delphinium sports into various forms of flower, color and shape—the tones of color being a mingling of blues, pinks and mauve, some in the most lovely combinations imaginable. They will all bloom the first year from seed if sown in February or March in a greenhouse or hot-bed, but will not all bloom at once, so that for at least a period of one month, new blooms are opening each day. One's main pleasure is in expectancy. You are always looking and hoping for something better, and you generally get it. It is best, when a plant does not produce a flower up to grade, to dig it up and discard it, but those that are good should be marked in some manner to identify them. A label placed at their side will do, but the better way is to get some small sheet-lead tags, bearing stamped-in numbers or letters. Attach to wire pegs ten inches long and force down near the plant, recording its number in your "Garden Book" with a description of the flower. This enables you at any planting time—spring is the best for delphiniums—to plant in groups of light blues, dark blues, etc. You may be undecided sometimes as to whether you consider a plant good enough to keep or not. In this case keep it, but mark it a "hold-over." Some plants do better the second season. They may be sown outdoors in May, but will hardly bloom the same year.
PLANT