The Practical Garden-Book Part 15

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On arbors, it is best to carry one permanent arm or trunk from each root over the framework to the peak. Each year the canes are cut back to short spurs (of 2 or 3 buds) along the sides of this trunk.

Grapes are set from 6 to 8 feet apart in rows which are 8 to 10 feet apart. A trellis made of 2 or 3 wires is the best support. Slat trellises catch too much wind and blow down. Avoid stimulating manures.

In very cold climates, the vines may be taken off the trellis in early winter and laid on the ground and lightly covered with earth. Along the boundaries of home lots, where Grapes are often planted, little is to be expected in the way of fruit because the ground is not well tilled. For mildew and rot, spray with Bordeaux mixture. See _Spraying_.

Concord is the most cosmopolitan variety, but its quality is not the best. For the home garden, a good selection may be made from the following list: Winch.e.l.l or Green Mountain, Campbell Early, Worden, Concord, Niagara, Moore Diamond, Vergennes, Agawam, Salem, Wilder, Iona, Brighton, Delaware.

GRAPERY. The European grapes rarely thrive out of doors in eastern America. Grape houses are necessary, with or without artificial heat.

Fruit for home use may be grown very satisfactorily in a cold Grapery (without artificial heat). A simple lean-to against the south side of a building or wall is cheap and serviceable. When a separate building is desired, an even-span house running north and south is preferable. There is no advantage in having a curved roof, except as a matter of looks. A compost of four parts rotted turf to one of manure is laid on a sloping cement bottom outside the house, making a border 12 feet wide and 2 feet deep. The cement may be replaced with rubble on well drained soils, but it is a poor makes.h.i.+ft. Every three years the upper 6 inches of the border should be renewed with manure. The border inside the house is prepared likewise. Two-year-old potted vines are planted about 4 feet apart in a single row. Part of the roots go through a crevice in the wall to the outer border and part remain inside; or all may go outside if the house is desired for other purposes. One strong cane is trained to a wire trellis hanging at least 18 inches from the gla.s.s, and is cut back to 3 feet the first year, 6 the second, and 9 the third. Do not be in a hurry to get a long cane. Pruning is on the spur system, as recommended for arbors on page 120. The vines are usually laid on the ground for winter and covered with leaves or wrapped with cloth.

As soon as the buds swell in early spring, tie the vines to the trellis and start out one shoot from each spur, rubbing off all others. After the berries begin to color, however, it is better to leave all further growth to shade the fruit. Pinch back each of these laterals two joints beyond the second bunch. To keep down red spider and thrips, the foliage should be sprayed with water every bright morning except during the blooming season. At least one-third of the berries should be thinned from each bunch; do not be afraid of taking out too many. Water the inside border frequently all through the summer, and the outside occasionally if the season is dry. Mildew may appear in July. The best preventives are to syringe faithfully, admit air freely, and sprinkle sulfur on the ground.

Fruit may be kept fresh on the vines in a warm (or artificially heated) Grapery until late December: in a coldhouse it must be picked before frost. After the fruit is off, ventilate from top and bottom and withhold water, so as to thoroughly ripen the wood. Along in November the canes are pruned, covered with straw or wrapped with mats and laid down till spring. Black Hamburg is superior to all other varieties for a cold Grapery; Bowood Muscat, Muscat of Alexandria and Cha.s.selas Musque may be added in the warmhouse. Good vines will live and bear almost indefinitely.--_S. W. Fletcher._

GRa.s.sES of various kinds are grown for ornament, the most popular types being the hardy perennials, which make attractive clumps in the lawn or border. The best of the permanent kinds in the North are the various sorts of Eulalia (properly Miscanthus). When once established they remain for years, making large and bold clumps. The striped kind, or zebra gra.s.s, is particularly good. These gra.s.ses thrive in any good soil. They grow from 4 to 7 feet high. The great reed, or _Arundo Donax_, is a bold subject and perfectly hardy. In a rich and rather moist soil, it grows 10 to 12 feet high when well established. Pampas Gra.s.s is most excellent in the Middle States and South. Some of the big native gra.s.ses and sedges make attractive lawn clumps.

Gra.s.ses are also grown for dry or everlasting bouquets. For this purpose, small-growing delicate annual species are mostly used. Good types are species of agrostis, briza, bromus, eragrostis, and pennisetum. Seeds of these and of others are sold by seedsmen. With ordinary treatment, they thrive in any garden soil.

For notes on sod-making, see _Lawn_.

GREENHOUSE. In America the word Greenhouse has come to be applied to all kinds of gla.s.s-houses in which plants are grown. Originally the word was applied to those houses in which plants are merely preserved or kept green during the winter. Other types of gla.s.s-houses are the conservatory, in which plants are displayed; stove or hothouse, in which plants are grown in a high temperature; the propagating pit, in which the multiplication of plants is carried forward; and the houses which have various temperatures, as cold, cool and intermediate. The principles which underlie the construction and management of gla.s.s-houses are too extensive to be discussed here. The reader should refer to special books on the topic. For the general subject, Taft's "Greenhouse Construction" and "Greenhouse Management" are excellent. For particular applications to floriculture, Hunt's "How to Grow Cut-flowers" is a standard work. For applications to the forcing of vegetable crops, Bailey's "Forcing-Book" may perhaps be consulted.

The smaller the gla.s.s-house the more difficult it is to manage, because it is likely to be more variable in temperature, moisture and other conditions. This is particularly true if the house is a small lean-to against the south side of a dwelling house, for it becomes very hot at midday and comparatively cold at night. In order to moderate the heat in these little houses, it is ordinarily advisable to use ground gla.s.s for the roof or to whitewash it. The house conservatory may be heated by a coal stove, but the best results are rarely to be attained in this case.

A stove is likely to leak gas, and the temperature is more or less uneven. The best results are to be attained when the conservatory is heated by steam or hot water, piped in the modern fas.h.i.+on with wrought iron pipes, which go together with threads. If the conservatory is heated from the heater which supplies the dwelling house, it should have an extra amount of pipe; otherwise it will be necessary to keep the dwelling house too hot for comfort in order to maintain the conservatory at its proper temperature. It is always best, when practicable, to heat the conservatory with a separate apparatus. There are various small hot water and steam heaters, the size of coal stoves, which are excellent for the purpose. For a small conservatory, hot water is usually preferable to steam, since it is less likely to fluctuate. For large establishments, however, the steam is usually the better. For further discussions of related subjects, see _Hotbed_, _Window Garden_, _Potting_ and _Watering_.

GREVILLEA. A very graceful greenhouse plant, suitable for house culture.

The plants grow freely from seed, and until they become too large are as decorative as ferns. Grevilleas are really trees, and are valuable in greenhouses and rooms only in their young state. They withstand much abuse. They are now very popular as jardiniere subjects. Seeds sown in spring will give handsome plants by the next winter.

GYPSOPHILA. BABY'S BREATH. _Gypsophila muralis_ is one of the dainty little plants called Baby's Breath. It is a low-growing annual forming compact mounds of green, thickly covered with little pink flowers. It is one of the most attractive border plants in cultivation. It is also a charming pot-plant. _G. paniculata_ is a hardy perennial having panicles of bluish white flowers. This is very graceful, and the flowers are fine for cutting and for use with sweet pea bouquets or with other choice flowers. The panicles are so lasting that they may be used in winter bouquets. The annuals may be planted 1 foot apart; the perennials 3 feet. Both are readily grown from seed, and bloom the first year.

HARDY. A relative term, used to denote a plant which endures the climate (particularly the winter climate) of a given place. Half-hardy plants are those which withstand some frost or uncongenial conditions, but will not endure the severity of the climate. Tender plants are those which are injured by light frosts.

HEDGES. Hedges are much less used in this country than in Europe, and for several reasons. Our climate is dry, and most Hedges do not thrive so well here as there; labor is high-priced, and the tr.i.m.m.i.n.g is therefore likely to be neglected; our farms are so large that much fencing is required; timber and wire are cheaper than live Hedges.

However, they are used with good effects about the home grounds. In order to secure a good Hedge, it is necessary to have a thoroughly well-prepared, deep soil, to set the plants close, and to shear them at least twice every year. For evergreen Hedges the most serviceable plant in general is the arborvitae. The plants may be set at distances of 1 to 2 feet apart. For choice Hedges about the grounds, particularly outside the northern states, some of the retinosporas are very useful.

One of the most satisfactory of all coniferous plants for Hedges is the common hemlock, which stands shearing well and makes a very soft and pleasing ma.s.s. The plants may be set from 1 to 3 feet apart. Other plants which hold their leaves and are good for Hedges are the common box and the privets. Box Hedges are the best for very low borders about walks and flower beds. The dwarf variety can be kept down to a height of 6 inches to a foot for any number of years. The larger-growing varieties make excellent Hedges 3, 4 and 5 feet high. The ordinary privet or prim holds its leaves well into winter in the North. The so-called Californian privet holds its leaves rather longer and stands better along the seash.o.r.e. In the southern states, nothing is better than _Citrus trifoliata_.

For Hedges of deciduous plants, the most common species are the buckthorn, the European thorn apple or crataegus, osage orange, and various kinds of roses.

Hedges should be trimmed the year after they are set, although they should not be trimmed very closely until they reach the desired or permanent height. Thereafter they should be sheared into the desired form in spring or fall. If the plants are allowed to grow for a year or two without tr.i.m.m.i.n.g, they lose their lower leaves and become open and straggly. Osage orange and some other plants are plashed--that is, the plants are set at an angle rather than perpendicularly, and they are wired together in such a way that they make an impenetrable barrier just above the surface of the ground.

HELIANTHUS. See _Sunflower_.

HELICHRYSUM. These are perhaps the most popular of the Everlastings (which see), having large flowers of several colors. They grow readily from seed, blooming from July to October. Height 10 inches to 2 feet.

Should be planted or thinned to stand 18 inches apart.

HELIOTROPE. A universal favorite house or border plant, growing readily from cuttings or seeds, and producing quant.i.ties of fragrant violet, purple or white flowers. One of the best methods of cultivation is to set a strong plant in the border and peg the new growths to the ground, where they will root and form a perfect mat, flowering profusely during the fall months until frost. They will endure the temperature of a living room well if the room is not too dry. Red spider is a natural enemy of the Heliotrope, and when once it obtains a foothold is a very difficult pest to manage, but frequent syringing with water will keep it in check. A light, rich soil and an abundance of heat are their requirements. Height 1 to 3 feet. Propagated by cuttings or layers.

h.e.l.lEBORE (White h.e.l.lebore) is often used for the killing of currant-worms and other insects (see _Currant_). It is not so poisonous as the a.r.s.enites, and therefore is to be preferred when it is necessary to apply a poison to nearly ripe fruit. It is usually applied in a spray with water, at the rate of ? ounce to the gallon. It is harmless to foliage.

h.e.l.lEBORUS, or CHRISTMAS ROSE, may be had in flower at the holidays if grown in a frame and protected. The usual time for it to flower in the open border is in March or early April. It will continue to bloom for many years if grown in a shady place. Roots may be divided as an increase is wanted. It may also be grown from seeds; and seedlings may be expected to bloom a year from the spring in which they are sown.

Height 6 to 10 inches.

HEMEROCALLIS, or YELLOW DAY LILY. The advice given under Funkia will apply to this.

HERBS are plants which die to the ground in winter. They may be annual, biennial, or perennial. For a list of annual Herbs suitable for the flower garden, see the articles on _Annuals_ and _Bedding_. A border or free ma.s.s of perennial Herbs is one of the charms of any place. It is informal, easy of care, and self-sustaining. The large part of the ma.s.s should be composed of common and hardy things--wild or from gardens--and incidental features may be made of the choicer and rarer exotics. In most cases, plants look better when judiciously mixed than when planted one kind in a bed. See _Border_.

HIBISCUS. Annuals and perennials, some of them shrubs, with showy, hollyhock-like flowers. The annual Hibiscuses are very satisfactory.

They grow quickly and flower freely. The flowers are usually white or yellow, of large size, and appear from July on. The herbaceous perennial kinds are amongst the best of hardy border plants, blooming in late summer and fall. The commonest of these is _Hibiscus Moscheutos_. Give rich, moist soil.

The greenhouse species are old favorites. They may be used in outdoor bedding through the summer, lifted in the fall and cut back. Keep rather dry and dormant during winter. Propagated by cuttings.

HIPPEASTRUM. Consult _Amaryllis_.

[Ill.u.s.tration: Common hoe]

[Ill.u.s.tration: Scarifier]

HOES should be of several patterns if the most efficient work is to be done in the garden. The ordinary Hoe is adapted only to the rougher and coa.r.s.er Hoe-work, such as digging and fitting the ground. For much of the subsequent tillage, some of the narrow-blade and pointed Hoes are excellent. For cutting off weeds, the push Hoe or scarifier is excellent.

[Ill.u.s.tration: Hollyhocks]

HOLLYHOCK. These old garden favorites have been neglected of late years, primarily because the Hollyhock rust has been so prevalent, destroying the plants or making the unsightly. The double varieties seem to suffer the most; and for that reason, and from the fact that the less formal type is in favor, the single varieties are now the most generally grown.

Their culture is very simple. The seed is usually sown in July or August, and the plants set where wanted the following spring. They will bloom the same year in which they are transplanted--the year following the seed-sowing. New plants should be set every two years, as the old crowns are apt to rot or die after the first flowering. For rust, spray early with Bordeaux mixture or ammoniacal carbonate of copper.

HOP, ORNAMENTAL. _Humulus j.a.ponicus_, or the annual HOP, is one of the best rapid-growing screen vines in cultivation. It makes a dense canopy of attractive foliage. The leaves are finely cut, and in one variety variegated with white. This variegated variety is a fine vine for a porch or front screen, always attracting attention to its markings. This Hop is propagated by seed sown in boxes in March. When once established, it will seed itself and start as soon as the soil becomes warm. Set plants 4 to 8 feet apart. Height 8 to 20 feet.

HORSERADISH. As a kitchen garden vegetable, this is usually planted in some out-of-the-way spot and a piece of the root dug as often as needed, the fragments of roots being left in the soil to grow for further use.

This method results in having nothing but tough, stringy roots, very unlike the product of a properly planted and well cared for bed. The best roots are those planted in the spring at the time of setting early cabbage, and dug as late the same fall as the weather will permit. It becomes, therefore, an annual crop. The roots for planting are small pieces, from 4 to 6 inches long, obtained when tr.i.m.m.i.n.g the roots dug in the fall. These pieces may be packed in sand and stored until wanted the following spring. In planting, the roots should be set with the upper end 3 inches below the surface of the ground, using a dibber or sharp-pointed stick in making the holes. The crop may be planted between rows of early-sown beets, lettuce or other crop, and given full possession of the ground when these crops are harvested. Where the ground is inclined to be stiff or the subsoil is near the surface, the roots may be set in a slanting position. In fact, many gardeners practice this method of planting, thinking that the roots make a better growth and are more uniform in size.

The Practical Garden-Book Part 15

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