PEONIES 24
CANTERBURY BELLS AND FOXGLOVE 30
ANEMONE JAPONICA 38
PHLOX PANICULATA 46
SWAMP MALLOW, GAILLARDIA AND CAMPANULA PERSICIFOLIA 50
MAKING A GARDEN OF PERENNIALS
INTRODUCTION
The successful garden has a permanent basis. There must be some flowers that appear year after year, whose position is fixed and whose appearance can be counted on. The group classed as perennials occupies this position and about flowers of this class is arranged all the various array of annuals and bulbs. These last act as reinforcements in rounding out the garden scheme.
Perennials are plants that live on year after year if the conditions surrounding them are congenial.
Trees and shrubs are perennials, of course; in these the stems are woody, but we are considering only those known as herbaceous perennials, having stems of a more or less soft texture that, with the exception of a few evergreen species, die back each fall, new ones appearing the following spring.
Quite a number of them are too tender to be generally grown as hardy perennials, but those that bloom freely the first year--like the snapdragon--are treated as annuals, discarding them when the season is ended.
Some biennials--those that do not bloom until the second year, and then die--may be placed among the perennials and considered of their class, because they seed so freely at the base of the parent plant and bloom the following year, that their presence in the border is nearly always assured. The only thing necessary to do is to transplant those not in the situation you desire them to bloom in. Rudbeckia triloba, one of the Black-eyed Susan type, is not only a good example of this class, but a charming plant that all should grow, and, moreover, it is a very accommodating one, doing splendidly in semi-shady places, such as north of buildings or under weeping trees like the rose-flowered Japanese weeping cherry. It is at home in full sunshine where it will form a broadly rounded, bushy plant about three feet in diameter and, when in full bloom, with its myriad of black-eyed flowers, it can dispel the worst case of melancholia a dyspeptic ever enjoyed. It requires a good open, rather light soil to do itself justice. If lifted when in full bloom, put into a ten-inch pot, well soaked at the roots, and set aside for a few hours away from sun and wind, it will last for two weeks as a porch or house plant.
We hear a good deal about the gardens of our grandmothers, perennial gardens, in which the plants outlived the flagstones at the house door.
With a few exceptions, perennials are not long-lived. The gas plant, peonies, some of the iris, day lilies, and a few others, seem permanent.
The usual run require to be taken up about every two or three years and divided. There are two reasons for this. In the first place, the roots have exhausted all the food within reach and, again, the main crown, from which spring the blooming shoots, dies from exhaustion. At the outer edge of this decay is generally a fringe of "live matter" which, if taken up, separate from the decayed center, divided, and reset in good soil, will rejuvenate itself, and soon form a new plant.
In unfavorable sections the Texas gaillardia will lose its crown during winter, and the anxious novice watches impatiently in the spring for its reappearance, and finally digs it up only to find that while the crown is decayed the roots are alive, and here and there, on these, new plant buds are forming which, if not disturbed, would soon make good plants, probably not placed, however, just where wanted. Nurserymen often avail themselves of this peculiarity and increase their stock by taking up a plant, cutting the roots into small sections, and growing them separately.
We must remember that nine-tenths of the plants we grow are exotic--natives of distant parts and climes--coming from various atmospheric conditions, and from all kinds of soil. We bring them into our garden and grow them all under one climatic influence and in the one kind of soil we happen to possess. Certainly we cannot expect uniform success with all of them. You might as well bring into one room unlettered natives of distant climes and expect them all to enter into a general conversation. Even in gardens quite near each other, their permanence varies. I cannot grow, successfully, any of the boltonias, while within a quarter of a mile of me, in a friend's garden, they grow like weeds. Our soil is the same, and one would suppose that the climatic conditions were, still the fact remains. I merely mention this so that any novice finding that he cannot grow some plants as well as others near him, may not feel lonesome in his grief. It is, however, a good plan, when a plant supposedly easy to grow, fails to materialize, to try it in another part of your own garden, and if it does not do well there, discard and forget it--the world is full of good things.
Due to the fact of the perennial's habit of annual recurrence the cultural directions are different from the flowers of but a season's bloom. There are some vital fundamentals that every gardener should know and some short cuts to success that every one may know. Since perennials, then, form the very kernel of the garden these are things of first importance in the growing of flowers and will be here elaborated sufficiently to give the reader an impetus that will carry him at a bound into the inner circle of the garden mysteries.
PREPARING THE BEDS
Do we want a successful flower bed--one that our neighbors will envy--or one in which the plants are struggling to exist? If we want the former--and who does not?--we must give our plants good pasturage. They are as fond of the fat of the land as we are, and, since they gladden our hearts with their radiant blooms, we should treat them fairly. And how? By giving them a good, deep soil for their root-run, not only rich in food, but loose and friable.
Most all virgin soils contain ample plant food, but the deeper part lacks the result of the action of air, sun and frost, and the natural humus of decayed leaves and grasses. The plant food it contains is "uncooked"--that is, not ready for plant assimilation. Therefore, the beds to contain your perennials should be dug at least two feet deep--three is better--and good garden soil, or soil from a corn-field or any hoed crop where the weeds have been kept down, used to supplement all but the top layer one foot in depth. All of this applies to tree and shrub holes also. This top layer of one foot in depth is apt to be in fair condition for immediate use and may be applied in the bottom of the bed, mixed with either fresh or rotted manure. The soil brought in may be mixed with old manure and placed on top.
A word about "old manure" is opportune here. Any manure that has been piled up for a year or more in a weed-infested corner and used on your grounds, especially on your lawn, is the best promoter of exercise I know of, and can keep you busy all summer dislodging the weeds that spring from the seed its bosom protected.
Of course, in a few sections where the soil is three feet deep--as I am told it is in the Illinois corn belt--all that is needed is to loosen up the soil to the depth mentioned, and add old manure. If the removal and bringing in of so much new soil is too harsh on the pocketbook we must proceed in a more economical way. If the soil is clayey in texture, mix with it sifted coal ashes or sand, and the coarser part of the ashes may be incorporated with the soil in the lower foot of bed. Remove the top one-foot layer, and set it aside; throw out the bottom soil to the remaining depth. Break it up finely and, in replacing it, besides the coal ashes or sand, add fresh strong manure, placing it in horizontal layers--say three inches of soil, and then a layer of manure four inches thick, when gently tamped down; or make the layers slantingly--say at an angle of about forty-five degrees. This will add humus to the soil, and allow air and moisture to penetrate it. Then put in the original top layer, mixing it with old manure. No fresh manure should touch the root of a plant. The fresh manure at the bottom of the bed will be well rotted by the time the roots reach it. After the top layer is put on you will find the bed raised up six to eight inches above the lawn, which is all right; it will settle enough in time. At all times break up the soil into fine particles, otherwise a lump of clay will remain a lump, and is of little value for plant use.
In making beds or shrub holes close to buildings having a cellar, one generally has to remove entirely all the soil, as that present usually consists of the deeper soil from the cellar excavation, mixed with bricks and mortar--few flowers root well in brick.
Place your flower beds along the walks, at the house, or along the lot lines, but do not clutter the center of your lawn with them. An open grass plot adds apparent size and dignity to any place. Give as much open sunlight as possible. Only early spring bloomers, like the hepaticas and trilliums, grow in what we call shade--though at the time of their growth and bloom they have the sunlight through the leafless tree branches. Do not make a bed where the drainage is bad or where water will stand in it during the winter. Tile draining will improve the bed under almost any circumstances.
Keep away from large trees. A vigorous elm, and a perennial cannot eat and drink out of the same dish and both grow fat. The perennial will be the one to suffer, mostly from lack of moisture. If you have planted near a tree or lack of space compels you to do so, take a sharp spade and, each spring, cut deeply all along the edge of the flower bed nearest the tree, and pull out from the bed all the small roots you can without disturbing the plants. This will help it for a time, but the elm will invade the bed again and the operation must be repeated. This applies to beds within eight or ten feet of a tree. For any bed much nearer, the cutting would be apt to injure the tree, and the growth in the bed would be a poor one.
Where the grounds are large and there is ample room for large beds at the borders, with an open lawn in front, flowering shrubs may be used as a background for perennials, but the growth of the shrubs requires frequent removals of the perennials further forward, and a frequent renewal of the plant food which the shrub is sharing. This method requires more watering on account of the double duty required of the soil.
Avoid fancy or geometrical shapes. They belong, when allowable, to formal gardens where tender bedding plants are used. Along walks, rectangular beds may be made, but against buildings or boundary lines, while the rear line may be comparatively straight, the front should be undulating, having long sweeping bays and promontories. No short curves should exist. They interfere with the lawn-mower. When it is desirable to face a boundary border with a walk, then, of course, the front line of a bed should be straight.
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