Chapter D (2)

Gnaphalium _(Edelweiss_).--Hardy everlasting flowers, which are covered with a woolly substance. They may be grown in any light, rich soil. The shrubby and herbaceous kinds may be increased by cuttings or division. The annuals are easily raised from seed. They flower in July. Height, 1 ft.

Goat's Rue.--_See_ "Galega."

Godetia.--Very pretty hardy annuals, that may be grown in any garden soil. Sow in the autumn for early flowering, or in spring for later blooms. July is their ordinary season of coming into flower. Height, 1-1/2 ft. to 2 ft.

Golden Feather.--Hardy annual foliage plants. They are not particular as to soil, and are easily raised from seed sown early in spring. They bloom in July. Height, 1 ft.

Golden Rod.--_See_ "Solidago."

Gompholobium.--Delicate greenhouse evergreen shrubs requiring a soil of sandy loam and peat and but little water. They flower in June, and are propagated by cuttings planted in sand under glass. Height, 2 ft.

Gomphrena.--_See_ "Globe Amaranthus."

Gooseberries.--From the middle of October to the end of November is the best time for planting. To produce good crops the soil should be rich, deep, and well drained. The position should be somewhat cool and sheltered, and a liberal quantity of liquid manure is beneficial. In dry seasons mulching may be resorted to with advantage. Cuttings are taken in autumn as soon as the leaves begin to fall. Select strong shoots about 1 ft. long. Cut the bottom end straight across, just below a joint, and with a sharp knife remove all the buds or eyes from the base to within a couple of inches of the top, so as to prevent the formation of suckers. Plant the shoots firmly 3 in. deep, in rows 1 ft. apart and 6 in. apart in the rows, on a north border. At the end of the second season cut back all leading shoots to two-thirds of their length. In after years remove weak and superfluous branches, as also any that are growing near the ground, but plenty of young wood must always be left on the bushes. The pruning may be done either in spring or autumn. The following varieties may be recommended:--Red, White, and Yellow Champagne, Wilmot's Early Red, Golden Drop, Ironmonger, and Warrington Red for dessert; while for preserving and culinary purposes Old Rough Red, Conquering Hero, Favourite, Broom Girl, British Crown, Ironsides, Lady Leicester, Thumper, Green Walnut, Leader, and Moreton Hero may be classed among the leading varieties. When grown in bush form ample room must be allowed between each to enable one to get round the bushes to gather the fruit.

Gooseberry Caterpillar.--To prevent caterpillars attacking Gooseberries syringe the bushes with a decoction of common foxglove (Digitalis), or dust the leaves with Hellebore powder. If the caterpillar has begun its attack, sprinkle some fresh lime below the bushes, and shake the bushes vigorously, so that the insects are dislodged.

Gorse.--_See_ "Ulex."

Gourds.--Sow at the end of March or the beginning of April on a slight hotbed; pot off when the plants are sufficiently advanced, and transplant to the open border in June. They are well adapted for arbours, trellis-work, or sloping banks. The following are among the most ornamental:--Abobra Viridiflora, Benincasa Cerifera (Wax Gourd), Bryonopsis Erythrocarpa, Coccinea Indica (scarlet fruit), Cucumis Anguinus (Serpent Gourd), Cucumis Dipsaceus (Teasel Gourd), Cucumis Dudaim (Balloon Gourd), Cucumis Erinaceus (Hedgehog Gourd), Cucumis Grossularoides (Gooseberry Gourd), Cucumis Perennis, Cucurbita Argyrosperma, Cucurbita Melopepo, Cyclanthera Explodens (Bombshell Gourd), Cyclanthera Pedata, Eopepon Aurantiacum, Eopepon Vitifolius, Lagenaria Clavata (Club Gourd), Lagenaria Enormis, Lagenaria Leucantha Depressa, Lagenaria Leucantha Longissima, Lagenaria Plate de Corse, Lagenaria Poire a Poudre, Lagenaria Siphon, Luffa Cylindrica, Luffa Solly Qua, Melothria Scabra, Momordica Balsamina, Momordica Charantia, Momordica Elaterium, Mukia Scabrella, Scotanthus Tubiflorus, Trichosanthes Anguina, Trichosanthes Coccinea, Trichosanthes Colubrina, and Trichosanthes Palmata.

Grafting.--The objects of Grafting are to bring a bush or tree into an earlier state of bearing than it would do naturally; to produce good fruit from an inferior plant; and to save space by putting dwarf scions on to rampant-growing trees. By the process of uniting strong-growing trees to those of a weaker nature their exuberance is checked, and weaker ones are improved by being worked on those of a stronger growth. Whatever form of Grafting is adopted, the inner layers of the bark of the stock or tree on which the operation is performed, must be brought into direct contact with the inner layers of the bark of the branch which is grafted, or, as it is called, the scion. This scion should be a branch of the early growth of the previous year's wood, and should be in the same state of vegetation as the stock. If the scion is in a more advanced state than the stock, its growth may be stopped by cutting it off and burying it in the earth under a north wall until the stock has advanced sufficiently in growth. Grafting of all kinds is best done in March, when the sap is flowing freely. Many methods of Grafting are adopted, the following being the principal:--

Whip or Tongue Grafting is suitable for almost any description of trees. Saw the stock off level at any desired height, then make a deep upward slanting cut through the bark at the top 2 or 3 in. in length, and in the middle of the cut turn the knife downwards and cut out a thin wedge-shaped socket. Next cut the scion in a similar manner so that it will fit exactly into the incision of the stock, bringing the bark of each into direct contact. Bind it firmly in position, and cover it over, from the top of the stock to the bottom of the scion, with grafting wax or clay. When the scion and the stock are united, which is demonstrated by the former making growth, remove the wax and cut away all shoots that may be produced on the stock.

In the French mode of Grafting known as the Bertemboise, the crown of the stock is cut at a long level, about 1 in. at the top being left square, and an angular piece is cut away in which the scion is inserted. It is then bound and waxed over.

Theophrastes or Rind Grafting is used where a tree has strong roots but inferior fruit. The branches are cut off about 1-1/2 or 2 ft. from the main stem. A sharp cut 2 or 3 in. in length is made down the bark of the branches, and the lower parts of the scion, selected from a superior tree, having been cut into tongues resembling the mouth-piece of a flageolet, the bark of the branches is lifted with a knife, and the tongues of the scions are slipped in, bound, and waxed.

Side Grafting is useful where it is desired to replenish the tree with a fresh branch. A T-shaped cut is made in the stem of the tree, extending to the inner bark; the scion is prepared by a longitudinal sloping cut of the same length as that in the stem, into which it is inserted, and the two are bound together and treated like other grafts.

Approach Grafting is the most favourable method of obtaining choice varieties of the vine, or of growing weak sorts on roots of a stronger growth. The scion is generally grown in a pot. A portion of the bark is cut from both scion and stock while the vine is in active growth, and the two wounded parts brought into contact, so that they fit exactly. They are then tied together, and moss (kept constantly wet) is bound round the parts. The union may be completed by the following spring, but it is safer to leave the cutting down of the stock to the point of union and the separation of the scion from the potted plant until the second spring.

Grafting Wax (_Cobbetts_), etc.--Pitch and resin four parts each, beeswax two parts, tallow one part. Melt and mix the ingredients, and use when just warm. It may be rolled into balls and stored in a dry place.

Clay bands are frequently employed for excluding the air from wounds caused in the process of grafting. These are liable to crack, unless the clay is well kneaded and mixed with wood ashes or dry horse droppings.

Grapes.--The cultivation of Grapes in the open in our cloudy and changeable climate cannot be looked forward to with any certainty of success. Two successive favourable seasons are indispensable--one to ripen the wood, and the next to ripen the fruit. Nevertheless, the highly ornamental foliage of the vine entitles it to a place on our walls, and every facility should be afforded for the production of a chance crop of fruit. The soil most suited to the growth of the vine is a medium loam, with which is incorporated a quantity of crushed chalk and half-inch bones. It should be given a south aspect, and be liberally supplied with water in dry seasons. April is the best time to plant it, spreading the roots out equally about 9 in. below the surface of the soil, and mulching with 3 or 4 in. of manure. Should mildew set in, syringe the vine with a mixture of soapsuds and sulphur. To secure a continuance of fruit, cut out some of the old rods each year as soon as the leaves fall, and train young shoots in their places. Last year's shoots produce other shoots the ensuing summer, and these are the fruit-bearers. One bunch of grapes is enough for a spur to carry. Professional gardeners cast off the weight of the bunches, and allow 1 ft. of rod to each pound of fruit. Tie or nail the bunches to the trellis or wall, and remove all branches or leaves that intercept light and air.

The vine may be increased by layers at the end of September. Cut a notch at a bud, and bury it 4 or 5 in. deep, leaving two or three eyes above ground. It may also be propagated by cuttings, about 1 ft. in length, of the last year's growth, with 1 in. of old wood attached, taken the latter end of February. Plant these deep in the ground, leaving one eye only above the surface. Both the Black Hamburgh and Royal Muscadine ripen as well as any in the open.

It is under glass only that Grapes can be brought to perfection. Here a night temperature of 55 to 65 degrees, with a rise of 5 or 10 degrees in the day, should be maintained, the walls and paths damped once or twice a day, and the vine syringed frequently until it comes into bloom, when syringing must cease, and a drier atmosphere is necessary; the moisture being reduced by degrees. As the grapes ripen, admit more air, and reduce the heat, otherwise the fruit will shrivel. After gathering the grapes syringe the vine frequently to clear it from spiders or dust, and keep the house cool to induce rest to the plant. The fruit may be preserved for a long while in a good condition by cutting it with about 1 ft. of the rod attached, and inserting the cuttings in bottles of water in which a piece of charcoal is placed: the bottles to be placed in racks nailed on to an upright post in any room or cellar where an equable temperature of 45 or 50 degrees can be kept up. The system of pruning adopted is that known as spur pruning (_see_ "Pruning"). Mrs. Pearson is a very fine variety, and produces very sweet berries; the Frontignan Grizzly Black and White are also delicious.

Grasses, Natural--

_AGROSTIS STOLONIFERA_ (_Creeping Bent Grass_).--Useful for damp meadows.

_ALOPECURUS PRATENSIS_ (_Meadow Foxtail_).--Strong-growing and very nutritious.

_ANTHOXANTHUM ODORATUM_ (_True Sweet Vernal_),--Hardy and gives fragrance to hay.

_AVENA FLAVESCENS_ (_Yellow Oat Grass_).--Fine for sheep; grows freely on light soils.

_CYNOSURUS CRISTATUS_ (_Crested Dogstail_).--Suitable for any soil.

_DACTYLIS GLOMERATA_ (_Cocksfoot_).--Strong and coarse-growing; cattle are fond of it.

_FESTUCA DURIUSCULA_ (_Hard Fescue_).--Dwarf-growing; excellent for sheep.

_FESTUCA ELATIOR_ (_Tall Fescue_).--Useful for cold, strong soils.

_FESTUCA OVINA_ (_Sheep's Fescue_).--Fine for dry, sandy soils.

_FESTUCA OVINA TENUIFOLIA_ (_Slender Fescue_).--Suitable for mountain pastures.

_FESTUCA PRATENSIS_ (_Meadow Fescue_).--Good permanent grass for rich, moist soil.

_PHLEUM PRATENSE_ (_Timothy, or Catstail_).--Suitable for strong soils; nutritious and hardy.

_POA NEMORALIS_ (_Wood Meadow Grass_).--Good for poor soils.

_POA PRATENSIS_ (_Smooth-stalked Meadow Grass_).--Grows well on light, dry soil, and also in water-meadows.

_POA TRIVIALIS_ (_Rough-stalked Meadow Grass_).--Fine for damp soil.

Grasses, Ornamental.--Fine for mixing in a green state with cut flowers, or in a dried condition for the decoration of vases, winter bouquets, etc. To have them in perfection gather them while quite fresh, with the pollen on them. Cut with as long stems as possible, arrange lightly in vases, and keep them in the dark till they are dried and the stems become stiff. The Grasses may be divided into two sections, viz., those for bouquets or edgings, and those grown in the border or on lawns for specimen plants. The class is numerous, but the following (which may be found described herein under alphabetical classification) may be mentioned:--

For bouquets and edgings: Agrostis, Anthoxanthum, Avena, Briza, Coix Lachryma, Eragrostis, Festuca, Hordeum Jubatum, Lagurus, and Stipa Pennata. For specimen plants: Eulalia, Gynerium, Panicum, Phalaris, and Zea.

Gratiola Officinalis.--This hardy herbaceous plant bears light blue flowers in July. A rich, moist soil is its delight. It is propagated by dividing the roots. Height, 1 ft.

Green Fly.--Fumigate the infected plants with tobacco, and afterwards syringe them with clear water; or the plants may be washed with tobacco water by means of a soft brush.

Grevillea.--Handsome greenhouse shrubs, which require a mould composed of equal parts of peat, sand, and loam. Give plenty of water in summer, a moderate amount at other seasons. Ripened cuttings may be rooted in sand, under a glass. Young plants may also be obtained from seed. They bloom in June. Their common height is from 3 to 4 ft., but G. Robusta attains a great height. Grevilleas will grow well in windows facing south.

Griselinia Littoralis.--A dwarf-growing, light-coloured evergreen shrub, which will thrive near the sea. It requires a light, dry soil, and may be increased by cuttings.

Guelder Rose.--_See_ "Viburnum."

Guernsey Lily (_Nerine Sarniense_).--Soil, strong, rich loam with sand, well drained. Plant the bulbs deeply in a warm, sheltered position, and let them remain undisturbed year by year. Keep the beds dry in winter, and protect the roots from frost. They also make good indoor plants, potted in moss or cocoa-nut fibre in September, or they may be grown in vases of water.

Gumming of Trees.--Scrape the gum off, wash the place thoroughly with clear water, and apply a compost of horse-dung, clay, and tar.

Gunnera Manicata (_Chilian Rhubarb_).--This hardy plant bears large leaves on stout foot-stalks, and is very ornamental in the backs of borders, etc. Planted in a rich, moist soil, it will flower in August. It can be propagated by division. Height, 6 ft.

Gunnera Scabra.--Has gigantic leaves, 4 to 5 ft. in diameter, on petioles 3 to 6 ft. in length. It prefers a moist, shady position, and bears division. Makes a fine addition to a sub-tropical garden, where it will flower in August. Height, 6 ft.

Gynerium (_Pampas Grass_).--This unquestionably is the grandest of all grasses, and is sufficiently hardy to endure most of our winters. It is, however, desirable to give it some protection. It requires a deep, rich, alluvial soil, with plenty of room and a good supply of water. Plants may be raised from seed sown thinly in pots during February or March, barely covering it with very fine soil, and keeping the surface damp. Plant out at end of May. They will flower when three or four years old. The old leaves should be allowed to remain on till the new ones appear, as they afford protection to the plant. It may be increased by division of the root. Height, 7 ft.

Gypsophila.--Of value for table bouquets, etc. They will grow in any soil, but prefer a chalky one. The herbaceous kinds are increased by cuttings; the annuals are sown in the open either in autumn or spring. They bloom during July and August. Height, 1 ft. to 3 ft.

H

Habrothamnus.--These beautiful evergreen shrubs require greenhouse culture, and to be grown in sandy loam and leaf-mould. The majority of them flower in spring. Height, 4 ft. to 6 ft.

Halesia Tetraptera (_Snowdrop Tree_).--This elegant shrub will grow in any soil, and may be propagated by cuttings of the roots or by layers. The pendent white flowers are produced close to the branches in June. Height, 8 ft.

Hamamelis (_Witch Hazel_).--An ornamental shrub which will grow in ordinary soil, but thrives best in a sandy one. It is increased by layers. May is its season for flowering. Height, 12 ft. to 15 ft. H. Arborea is a curious small tree, producing brownish-yellow flowers in mid-winter.

Harpalium Rigidum.--A hardy perennial, producing very fine yellow flowers in the autumn. It will grow in any good garden soil, and may be propagated by seed sown in early autumn, or by division of the roots. Height, 3 ft.

Hawkweed.--_See_ "Crepis" _and_ "Hieracium."

Heartsease.--_See_ "Pansies."

Heaths, Greenhouse.--For their successful growth Heaths require a well-drained soil, composed of three parts finely pulverised peat and one part silver sand, free ventilation, and a careful supply of water, so that the soil is always damp. If they suffer a check they are hard to bring round, especially the hard-wooded kinds. Some of the soft-wooded Heaths, such as the H. Hyemalis, are easier of management. After they have flowered they may be cut hard back, re-potted, and supplied with liquid manure. The stout shoots thus obtained will bloom the following season. (_See also_ "Ericas.")

Hedera.--_See_ "Ivy."

Hedychium Gardnerianum.--A hothouse herbaceous plant, delighting in a rich, light soil, plenty of room in the pots for the roots, and a good amount of sunshine. In the spring a top-dressing of rich manure and soot should be given. From the time the leaves begin to expand, and all through its growing stage, it needs plenty water, and an occasional application of liquid manure. The foliage should not be cut off when it dies, but allowed to remain on all the winter. While the plant is dormant keep it rather dry and quite free from frost. It may be increased by dividing the roots, but it blooms best when undisturbed. July is its flowering month. Height, 6 ft.

Hedysarum.--Hardy perennials, requiring a light, rich soil, or loam and peat. They may be raised from seed, or increased by dividing the roots in spring. H. Multijugum bears rich purple flowers. Height, 6 in. to 3 ft.

Heleniums.--The Pumilum is a very pretty hardy perennial that may be grown in any soil, and increased by dividing the roots. It produces its golden flowers in August. Height, 1-1/2 ft. H. Autumnale is also easy to grow, but flowers a month later than the Pumilum, and attains a height of 3 ft. H. Bigelowi is the best of the late autumn-flowering species, producing an abundance of rich yellow flowers with purple discs. Flowers in August. Height, 3-1/2 ft.

Helianthemum Alpinum (_Rock Roses_).--These hardy perennials are best grown in sandy loam and peat, and may be increased by cuttings placed under glass in a sheltered situation. Bloom in June or July. Height, 1 ft.

Helianthus (_Sunflowers_).--The tall variety is a very stately plant, suitable for the background or a corner of the border. Well-grown flowers have measured 16 in. in diameter. The miniature kinds make fine vase ornaments. They grow in any garden soil, and are easily increased by seed raised on a hotbed in spring and afterwards transplanted. The perennials may be propagated by division of the root. They produce their flowers in August. Height, 3 ft. to 6 ft.

Helichrysum.--Fine everlasting hardy annuals, that grow best in a mixture of three parts peat and one part sandy loam. May be readily raised from seed sown in a cold frame in March, or cuttings taken off at a joint will strike in peat and sand. Bloom during July and August. For winter decoration the flowers should be gathered in a young state, as they continue to develop after being gathered. Height, 1 ft. to 6 ft, but most of them are 2 ft. high.

Heliophila.--Pretty little hardy annuals, thriving best in sandy loam and peat. Sow the seed early in spring in pots placed in a gentle hotbed, and plant out in May. They flower in June. Height, 9 in.

Heliopsis.--This hardy perennial is useful for cutting purposes, the flowers being borne on long stalks, and lasting for two or three weeks in water. It is not particular as to soil, and may be increased by dividing the roots. Height, 5 ft.

Heliotrope.--Commonly called Cherry Pie. Sow the seed early in spring in light, rich soil in a little heat, and plant out in May. The best plants, however, are obtained from cuttings taken off when young, in the same way as Verbenas and bedding Calceolarias. They are very sensitive to frost. Flower in June. Height, 1 ft.

Helipterium.--A half-hardy annual, bearing everlasting flowers. It should receive the same treatment as Helichrysum. Blooms in May or June. Height, 2 ft.

Helleborus (_Christmas Rose_).--As its name implies, the Hellebore flowers about Christmas, and that without any protection whatever. The foliage is evergreen, and of a dark colour. When the plant is once established it produces flowers in great abundance. The plants of the white-flowered variety should be protected with a hand-light when the flower-buds appear, in order to preserve the blossoms pure and clean. Any deeply-dug rich garden soil suits it, and it is most at home under the shade of a tree. It prefers a sheltered situation, and during the summer months a mulching of litter and an occasional watering will be beneficial. Readily increased by division in spring or seed. Height, 1 ft.

Helonias Bullata.--A pretty herbaceous plant, bearing dense racemes of purple-rose flowers from June to August. It grows best in peat, in a moist position. It can be raised from seed or increased by division of the roots. Height 1-1/2 ft.

Hemerocallis (_Day Lily_).--Old-fashioned plants of great merit. Planted in large clumps they produce a grand effect. They are easily grown in any common garden soil, and bloom in July. Height, 3 ft. H. Kwanso has handsome, variegated foliage.

Hemp.--_See_ "Canna" _and_ "Cannabis."

Hepatica.--This enjoys a rather light, sandy soil and a shady situation. The roots should be taken up and divided every second year. Well adapted for surrounding beds or clumps of Rhododendrons. Flowers in March. Height, 4 in.

Heracleum.--Coarse hardy biennials, that may be grown in any kind of soil, and are readily raised from seed. They flower at midsummer. Height, 2 ft. to 4 ft.

Herbs.--Thyme, Marjoram, Chervil, Basil, Burnet, Hyssop, Savory, etc., should be sown early in spring, in dry, mild weather, in narrow drills about 1/2 in. deep and 8 or 9 in. apart, covered evenly with soil, and transplanted when strong enough. Mint is quickly increased by separating the roots in spring, and covering them with 1 in. of earth. Sage is propagated by slips of the young shoots taken either in spring or autumn. If planted in light soil and in a sunny position it produces very fragrant flowers. Chives should be planted 6 or 8 in. apart: they are increased by division in spring. Penny Royal, like mint generally, will grow from very small pieces of the root; it needs to be frequently transplanted, and to be kept from a damp condition. Rosemary will grow from cuttings planted under glass in a shady spot. Thyme likes a light, rich soil, and bears division. Sorrel will grow in any soil, and the roots should be divided every two or three years. Chamomile roots are divided and subdivided in spring. Herbs should be harvested on a fine day, just before they are in full bloom. Tie them up in small bunches and hang in the shade to dry, then wrap in paper and store in air-tight vessels, or rub the leaves to a powder and keep in tightly-corked bottles. They will retain their strength for a long time.

Herbs, the Uses of Sweet and Pot.--

_ANGELICA_.--A biennial. Leaves and stalks are eaten raw or boiled; the seeds are aromatic, and used to flavour spirits.

_ANISE_.--Leaves used for garnishing, and for seasoning, like fennel; the seeds are medicinal.

_BALM_.--A hardy perennial. Makes a useful tea and wine for fevers.

_BASIL_, Sweet and Bush.--Half-hardy annuals. The leaves and tops of the shoots, on account of their clove-like flavour, are used for seasoning soups and introduced into salads.

_BORAGE_.--Hardy annual. Used for salads and garnishing, and as an ingredient in cool drinks; excellent also for bees.

_CHAMOMILE_.--A hardy perennial. Flowers used medicinally.

_CARAWAY_.--A biennial. Leaves used in soups, and the seeds in confectionery and medicine.

_CHERVIL_.--An annual. Useful for salads.

_CHIVES_.--Hardy perennial. The young tops used to flavour soups, etc.

_CORIANDER_.--A hardy annual. Cultivated for garnishing.

_DILL_.--A hardy perennial. Leaves used in soups and sauces, also in pickles.

_FENNEL_.--Hardy perennial. Used in salads and in fish sauce, also for garnishing dishes.

_HOREHOUND_.--Hardy perennial. Leaves and young shoots used for making a beverage for coughs.

_HYSSOP_.--Hardy evergreen shrub. Leaves and young shoots used for making tea; also as a pot herb.

_LAVENDER_.--Hardy perennial. Cultivated for its flowers, for the distillation of lavender water, for flavouring sauces, and for medicinal purposes.

_MARIGOLD_, Pot.--Hardy annual. Flowers used in soups.

_MARJORAM_, Sweet or Knotted, and Pot.--Hardy annuals. Aromatic and sweet flavour. Used for stuffings and as a pot herb; leaves dried for winter use.

_RAMPION_.--Hardy perennial. Roots used as a radish; they have a nutty flavour.

_ROSEMARY_.--Hardy ornamental shrub. Sprigs used for garnishing and the leaves in drink.

_RUE_.--Hardy evergreen shrub. Leaves used for medicinal drinks; useful for poultry with croup.

_SAGE_.--Hardy perennial. Decoction of leaves drank as tea; used also for stuffing, meats, and sauces.

_SAVORY_, Summer.--Hardy annual. Used for flavouring soups and salads.

_SAVORY_, Winter.--Hardy evergreen shrub. Its aromatic flavour makes it valuable as a pot herb.

_SCURVY GRASS_.--The small leaves are eaten as watercress.

_SKIRRET_.--Hardy perennial. Sweet, white, and pleasant; the tubers are boiled and served up with butter.

_SORREL_, Broad-Leaved.--Hardy perennial. Imparts an acid flavour to salads and soups.

_THYME_, Broad-Leaved.--Hardy perennial. Young leaves and tops used for stuffing, also in soups and sauces.

_TARRAGON_.--Hardy perennial. For flavouring vinegar; also used in salads, soups, and pickles.

_WORMWOOD_.--A hardy shrub. Beneficial to horses and poultry, and is used for medical purposes.

Herniaria Glabra.--These dwarf carpeting plants are of easy culture. Grow from seed in spring and transplant into sandy soil. Height, 1-1/2 in.

Hesperis.--_See_ "Rocket."

Heuchera.--Very neat, but not showy, hardy American perennials. They may be grown in any ordinary light garden soil, are increased by dividing the root, and bloom in May. Height, 1 ft. to 2 ft.

Hibbertia Dentata.--An evergreen twining plant, requiring a greenhouse for its cultivation and a soil of sandy loam and peat. It flowers in July, and is increased by cuttings taken in spring or summer and kept under glass. Height, 6 ft.

Hibiscus Africanus.--A handsome hardy annual Mallow. Sow in March in slight heat, and plant out in May 10 in. apart. Grows best in a mixture of loam and peat. Blooms in June. Height, 2 ft.

Hibiscus Syriacus (_Rose of Sharon_).--A hardy, deciduous, autumn-flowering shrub, which will grow in common soil, and may be propagated by seeds, layers, or cuttings planted under glass. Height, 6 ft.

Hieracium (_Hawkweed_).--A free-growing hardy perennial, suitable for a sunny bank or border. It is not particular as to soil. From June to September it produces orange-brown flowers. It grows freely from seed, and the roots bear division. Height, 1-1/2 ft.

Hippeastrums.--_See_ "Amaryllis."

Hippocrepis.--Very pretty hardy trailing perennials, covered from May to July with golden Pea-shaped flowers. They will grow in any light, sandy soil, and may be increased by cuttings, which root readily under glass. Height, 3 in. to 6 in.

Hippophae.--Ornamental shrubs, thriving in ordinary soil, and increased by layers or cuttings of the roots. H. Rhamnoides (Sea Buckthorn) flowers in May. Height, 12 ft.

Holboellia Latifolia.--_See_ "Stauntonia Latifolia."

Holly (_Ilex_).--This pleasing hardy evergreen shrub thrives best on a deep, sandy loam, but will grow in any good soil, provided the position is dry. It succeeds well in the shade. Cuttings of young shoots having 1 in. of the old wood attached will strike root, but the plant is of very slow growth, and takes at least four years to grow into a good bush. Choice varieties may be grafted or budded on to the common sorts in June or July. To grow Holly from seed, gather the berries when ripe, crush them, and mix them up with a little sandy loam, bury them in a hole 3 ft. deep, and cover with litter. Dig them up and sow them in March. Big bushes are best moved at the end of August, mixing the earth to a puddle before planting. The less pruning they receive the better. They may be trimmed in spring.

Hollyhock.--May be raised from seed or cuttings. Sow the seed about the second week of March in very rich soil, and cover it with 1 in. of dry earth. In June (having soaked the bed thoroughly overnight) remove the young plants to a nursery-bed, setting them 6 in. apart. Press the earth firmly round the roots, and water plentifully until settled. In the autumn plant them where they are to bloom. Cuttings may be taken as soon as the flowers appear, or from the old plants in autumn. Each joint having an eye will furnish a plant. Select side branches having two or three joints and leaves. Cut the shoots through just under the lower joint, leaving the leaf entire; cut it also about 2 in. above the joint. Plant in equal parts of loam, gritty sand, and leaf-mould; shelter from the sun, and sprinkle them every day in fine weather with water. If the cuttings are taken in autumn pot them off in 60-sized pots, and keep them in a cold frame till the spring, when they may be planted out. Flowers in August. Height, 6 ft.

Homerias.--Beautiful little South African plants. For out-door cultivation plant the bulbs in a dry, warm situation, from October to January, 3 in. deep, and the same distance apart, in rich, light, well-drained soil, and protect them from heavy rains with a good layer of leaves. For pot culture put four or five bulbs in a 5-in. pot, place in a cold frame, and cover with cocoa-nut fibre until the growth appears. Water moderately, and when the flowers fade abstain from supplying moisture. The bulbs are not quite hardy, therefore they should be removed indoors before frosts appear.

Homogyne Alpina.--Hardy herbaceous plants flowering in April. Any soil is suitable for them, and they may be increased by division. Height, 6 in.

Honesty (_Lunaria_).--Interesting hardy biennials. When dried, the shining seed-pods make a handsome addition to winter bouquets, mixed with ornamental grass. Any common soil suits them. Sow the seed any time from April to June, and transplant them to the border in the autumn for flowering the following May. Height, 1-1/2 ft. to 3 ft.

Honeysuckles.--These rapid twiners thrive in any loamy soil, and may be increased by putting down layers in the autumn, after the leaves begin to fall. They can also be propagated by cuttings taken in the autumn and planted in a shady, sheltered spot. Caprifolium Brachypoda and the evergreen C. Sempervirens are handsome, free-flowering kinds, suitable for almost any situation. C. Aurea-reticulata has beautifully variegated leaves, which render it very ornamental. Height, 6 ft. to 8 ft.

Hop.--A useful hardy climber for covering verandahs, summer-houses, etc. Plant in rich, loamy soil, and increase by dividing the roots. (_See also_ "Humulus Japonicus.")

Hordeum Jubatum (_Squirrel-tail Grass)_.--A very pretty species resembling miniature barley. Sow seed in March, covering it very lightly, and keep the surface of the soil moist till the grass appears. Height, 1-1/2 ft.

Horminum Pyrenaicum.--This hardy perennial produces erect white flowers with blue corolla in June or July. It will grow in any ordinary soil, but needs protection in winter, as it is apt to be injured by damp. It may be propagated either by seed or division. Height, 1-1/2 ft.

Horn Poppy.--_See_ "Glaucium."

Horseradish.--Plant in October or February in deep, rich soil; or it may be grown on a heap of cinder-ashes, or on any light ground through which the roots can make their way readily. The best way to increase it is by slips taken from the roots. It requires little or no attention beyond pinching out the tops when running to seed and keeping the ground hoed.

Hotbeds, to Make.--Take dead leaves and stable-straw, with the dung, in the proportion of two double loads for a three-light frame. Turn it over four or five times during a fortnight, watering it if it is dry. Then mark out the bed, allowing 1 ft. or more each way than the size of the frame. Shake the compost well up, and afterwards beat it down equally with the fork. Place the frame on the bed, leaving the lights off for four or five days to allow the rank steam to escape. Keep a thermometer in the frame, and as soon as the temperature falls below 70 degrees apply a lining of fresh dung to the front and one side of the bed, and when this again declines, add another lining to the back and other side, and so on from time to time as occasion requires. The mats used for covering the frames in frosty weather should be made to fit the top, and not hang over the sides.

Houseleek.--_See_ "Sempervivum."

Houstonia Coerulea.--These hardy little evergreens are more generally known as Bluets. They make charming ornaments for rock-work, planted between large stones, but in this position they need protection from severe frosts. When planted in pots and placed in a cold frame they show to most advantage. A mixture of leaf-mould and sand, and a moist but well-drained situation is what they delight in. They bloom continuously from April to July. Height, 3 in.

Hovea Celsi.--A greenhouse shrub, which is evergreen and elegant when in flower in June. A sandy loam and peat soil is most suitable, and it may be increased by cuttings planted in sand under a hand-glass. Height, 3 ft.

Humea.--A remarkably handsome and graceful plant, the leaves of which when slightly bruised yield a strong odour. It is equally suitable for the centre of beds or large borders, and placed in pots on terraces or the lawn it is very effective. The seed should be raised on a gentle hotbed, then potted off and kept in the greenhouse till the second year, when it may be turned out into a warm situation. It generally succeeds better in such a position than in the greenhouse. Flowers in July. Height, 6 ft. to 8 ft.

Humulus Japonicus.--(_Japanese Hop_).--A hardy annual Hop of rapid growth, the leaves of which are splashed with white. Useful for covering arbours, verandahs, etc. A deep, loamy soil suits it best. Increased by seed sown in gentle heat in February, and gradually hardened off. Flowers in July. Height, 20 ft.

Hutchinsia Alpina.--This small alpine creeper is a profuse bloomer, its glistening white flowers being produced at all seasons. It grows in moist vegetable mould, and bears transplanting at any season. Care, however, is required to prevent its roots over-running and choking other things. Height, 2 in.

Hyacinths.--May be grown in pots, in glasses, or in beds and borders. The soil should be rich and light. Good loam mixed with old manure and a little leaf-mould and sand suits them very well. If intended to be grown in pots the best time to begin potting is early in September, putting more in at intervals of two or three weeks until the end of December. One bulb is sufficient for a 5-in. or 6-in. pot, or three may be placed in an 8-in. pot. The soil under the bulb should not be pressed down. The top of the bulb should be just above the surface. Place the pots on a bed of ashes in a cold frame, put a small inverted pot over the top of the bulb, and cover the whole with cocoa-nut fibre or cinder-ashes to the depth of about 4 in. In about a month roots will have formed with about 1 in. of top growth. The plants may then be taken out, gradually exposed to the light, and finally removed to the conservatory or sunny window. The doubles do best in pots.

For growing in glasses select the firmest and best-shaped bulbs. Those with single blossoms are preferable, as they are of stronger constitution than the doubles. Fill the glasses with pure pond or rain water, so that the bulbs just escape touching it, and put a piece of charcoal in each glass, and change the water when it becomes offensive, taking care that the temperature is not below that which is poured away. Stand the glasses in a cool, dark place for three or four weeks until the roots have made considerable progress, then gradually inure to the full light. September is a good time to start the growth.

When planted in beds or borders, place the bulbs about 4 in. deep and 6 in. apart, putting a little silver sand below each one. This may be done at any time from October till frost sets in. They succeed fairly well in any good garden soil, but give greatest satisfaction when the ground is rich and light.

Hyacinthus (_Muscari_).--A very hardy race of spring-flowering bulbs. Though the varieties are very dissimilar in appearance, they all produce a good effect, especially when planted in good large clumps. Plant from September to December. A sandy soil suits them best. The following are well-known varieties:--_BOTRYOIDES_ (_Grape Hyacinth_).--Very pretty and hardy, bearing fine spikes of deep, rich blue flowers in compact clusters on a stem 6 to 9 in. high. Sweet-scented, and blooms about May. The _Alba_, or white, variety is also sweet-scented.

Hyacinthus--_continued_.

_CANDICANS_ (_Galtonia_).--The white Cape Hyacinth, or Spire Lily. A hardy, summer-flowering, bulbous plant 3 ft. to 4 ft. in height, gracefully surmounted with from twenty to fifty pendent, bell-shaped snow-white flowers. Thrives in any position and equally suitable for indoor or outdoor decoration.

_MOSCHATUS_ (_Musk Hyacinth_).--Bears very fragrant purplish flowers.

_PLVMOSUM_ (_Feather Hyacinth_).--A fine, hardy, dwarf plant suitable for any soil. Its massive sprays of fine blue flowers, arranged in curious clusters, 5 to 6 in. in length, resemble much-branched slender coral.

_RACEMOSUM_ (_Starch Hyacinth_).--Rich dark-blue or reddish-purple flowers. Very free-flowering and fine for massing. It is similar to the Cape Hyacinth, but flowers in denser spikes.

Hydrangea.--This shrub delights in a moist, sheltered position and rich soil. It may be increased at any time from cuttings of the young side-shoots, 2 or 3 in. long, under glass, in sandy soil. The old stems will also strike if planted in a sheltered situation. The plants should be cut back when they have done flowering, and protected from frost; or they may be cut down to the root and covered with manure. They are well suited for the front of shrubberies, and also make fine plants for pot cultivation. The flowers are produced in June and July. Height, 3 ft.

Hymenanthera Crassifolia.--Ornamental evergreen shrubs, thriving best in a compost of loam and peat. They are increased by cuttings planted in sand and subjected to a little heat. Height, 6 ft.

Hymenoxys.--Pretty little hardy annuals that may be easily raised from seed sown early in March in any garden soil. They bloom in June. Height, 1 ft.

Hypericum (_St. John's Wort_).--Favourite dwarf shrubs. Any soil suits the hardy kinds, but they prefer shade and moisture. These may be increased by seed or division. The greenhouse varieties thrive best in a mixture of loam and peat. Young cuttings placed in sand under glass will strike. July is their flowering season. Height, 1-1/2 ft. to 2 ft.