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K

Kadsura Japonica.—This is a beautiful creeper for a south or west aspect. It thrives best in loam and sandy peat. Cuttings may be struck in sand, placed under a glass, and subjected to heat.

Kale.—See "Borecole."

Kalmia Latifolia.—This hardy, dwarf evergreen shrub is deservedly a great favourite. It produces a wealth of flowers in large clusters. It requires to be grown in peat or good leaf-mould, and needs pure air. It is increased by pegging down the lower branches, which soon become rooted. The flowers are produced from June to August. Height, 2 ft.

Kalosanthes.—Showy greenhouse succulent plants. A light, turfy loam is suitable for them, and they may be increased by placing cuttings of the young shoots in a sandy soil on a slight hotbed in spring. Pinch them back so as to produce a bushy growth, and give support to the heavy heads of bloom. The cuttings should be left for twenty-four hours to dry before they are planted. The plants require very little water, and they flower in July. Height, 6 in. to 1 ft.

Kaulfussia.—Sow this pretty hardy annual in April in the open border, or in March in slight heat. It may also be sown in autumn for early flowering. It will succeed in any light soil, blooming in July. Height, 6 in.

Kennedya Marryattæ.—A greenhouse evergreen twining plant of a very beautiful order, which thrives best in a compost of sandy loam and peat. Cuttings of the young wood planted in sand, and having a bottom-heat, will strike. It produces its flowers in May. Height, 4 ft. Other varieties of Kennedyas range from 2 to 10 ft. They all need to be well drained and not to stand too near the pipes.

Kerria (Corchorus).—Beautiful hardy shrubs, which may be grown in any garden soil, and can be propagated by cuttings of the young wood, taken at a joint, and placed under glass. They flower at midsummer. Height, 4 ft.

Koelreuteria Paniculata.—This is an ornamental tree bearing long spikes of yellow flowers in July. It will grow in any soil, but requires a sheltered position, and may be increased by layers or root cuttings. Height, 10 ft.

Kohl Rabi (Turnip-rooted Cabbage).—Though mostly grown as a farm crop, this vegetable is strongly recommended for garden cultivation, as it is both productive and nutritious, and is delicious when cooked while still very small and young. Sow in March, and transplant to deeply-dug and liberally manured ground, at a distance of 15 in. from each other.

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I

Iberis.—See "Candytuft."

Ice Plants.—See "Mesembryanthemum."

Ilex.—See "Holly."

Impatiens Sultani.—Half-hardy perennials. May be raised from seed sown early in spring on a hotbed, or later on in a shady spot in the open border; greenhouse culture, however, is more suitable. They bloom in August. Height, 1½ ft.

Incarvilleas.—Ornamental hardy herbaceous plants, of easy culture. They are suitable for the border or the rockery, and will grow in any soil if not too dry and exposed. The tuberous roots may be planted at any time in autumn, 4 in. deep. I. Delavayi makes a fine solitary or lawn plant, its leaves being from 1 to 3 ft. long; the soft rose-pink, Mimulus-shaped flowers, which are carried on stout stems well above the foliage, appearing in May. Care should be taken not to disturb it in spring, and it is advisable to cover the roots in winter with a pyramid of ashes, which may be carefully removed at the end of April. Incarvilleas may be propagated by seed sown, as soon as it is ripe, in light, well-drained soil, giving the young plants protection in a frame during the first winter, with enough water merely to keep them moist. Height, 2 ft.

Indian Corn.—See "Zea."

Indian Shot.—See "Canna."

India-rubber Plants.—See "Ficus."

Indigofera.—Beautiful evergreen shrubs. I. Australis has elegant, fern-like foliage and racemes of pink or purple Pea-shaped flowers in April. I. Decora Alba bears its white flowers in July. They require a sandy loam or peat soil, and greenhouse culture. Cuttings of the young wood planted in sand under glass will strike. Height, 2½ ft.

Insects on Plants.—To destroy insects on plants wash the plant with Tobacco-Water (which see). Or put 1 oz. of quassia chips in a muslin bag, pour on some boiling water, and make it up to I gallon; dissolve 1 oz. of soft soap, add it to the chips, and stir well. Use it two or three times during spring and early summer.

Inula Royleana (Fleabane).—A hardy perennial which flowers in November. It will grow in any garden soil, and can be increased by seeds, or by division of the roots. Height, 3 ft.

Ionopsidium.—These hardy annuals grow freely in any rich, damp soil; a shady position is indispensable. Height, 1/8 ft.

Ipomoea.—These beautiful climbing plants are very suitable for covering trellis-work, or for the pillars or rafters of the stove-house. The seed is generally sown in April on a hotbed or under glass, and the young plants set out in the border of the house in May in light, rich soil. Success is mainly secured by allowing plenty of root-room. The perennial kinds are increased from cuttings taken from the small side-shoots placed in sand in a brisk bottom-heat. If grown in the open they often shed their seed, and come up year after year with but little attention. They make a good contrast to Canariensis. The Ipomoea Horsfalliae, with its bright scarlet flowers, has a lovely appearance, but must be treated as a stove evergreen. This is propagated by layers, or by grafting on some strong-growing kind. It thrives in loam and peat mixed with a little dung, and flowers in July or August. Height, 6 ft. to 10 ft.

Ipomopsis.—A very beautiful half-hardy biennial, but difficult to cultivate. Some gardeners steep the seed in hot water before sowing it; but the best way seems to be to sow it in July in 3-in. pots in equal parts of sandy peat and loam, ensuring good drainage, and place it in a cold frame, giving it very little water. When the leaves appear, thin out the plants to three or four in each pot. Replace them in the frame for a week or so, then remove them to a light, airy part of the greenhouse for the winter. During this period be careful not to over-water them. In spring shift them into well-drained 4-1/2-in. pots, using the same kind of soil as before, and taking great care not to injure the roots; still give the least possible amount of water. If plenty of light and air be given, they will flower in July or August. Height, 2 ft.

Iresines.—Take cuttings of these greenhouse plants in autumn; insert them thinly in 48-size pots filled with coarse sand, loam, and leaf-mould, and place in a uniform temperature of 60 or 70 degrees. When they have taken root place them near the glass. Height, 1-1/2 ft.

Iris.—The Iris is the orchid of the flower garden; its blossoms are the most rich and varied in colour of hardy plants. For cutting, for vases, table decoration, etc., it is exceedingly useful, as it is very free-flowering, and lasts a long time in water. It thrives in almost any soil, though a sandy one suits it best, and is strikingly effective when planted in clumps. It soon increases if left undisturbed. The English Iris blooms in June and July, bearing large and magnificent flowers ranging in colour from white to deep purple, some being self-colours, while others are prettily marbled. The German Iris is especially suitable for town gardens. The Spanish Iris blooms a fortnight before the English. Its flowers, however, are smaller, and the combinations of colours very different. The Leopard Iris (Pardanthus Chinensis)is very showy, its orange-yellow flowers, spotted purple-brown, appearing in June and July. They are quite hardy. The best time for planting them is October or November, selecting a sunny position. Height, 1-1/2 ft.

Isopyrums—Hardy herbaceous plants of great beauty, nearly related to the Thalictrums. They will grow in any ordinary soil, but flourish best in vegetable mould, and in a moist, yet open, situation. They are readily raised from seed, or may be propagated by division of the roots in autumn. They flower in July. Height, 1 ft. to 1-1/2 ft.

Ivy (Hedera).—A deep, rich soil suits the common Ivy; the more tender kinds require a lighter mould. To increase them, plant slips in a north border in sandy soil. Keep them moist through the autumn, and plant them out when well rooted. The following are the principal choice sorts:—Aurea Spectabilis, palmate-leaved, blotched with yellow; Cavendishii, a slender-growing variety, leaves margined with white, with a bronzy shade on the edge; Conglomerata, crumpled leaves; Elegantissima, slender-growing, with silvery variegated leaves; Irish Gold-Blotch, large leaves, blotched with yellow; Latifolia Maculata, large white-blotched leaves; Lee's Silver, silver variegated; Maderiensis Variegata, leaves broadly marked with white; Marmorata, small leaves blotched and marbled with white; Pupurea, small leaves of a bright green changing to bronzy-purple; Rhomboides Obovata, deep green foliage; Rhomboides Variegata, greyish-green leaves, edged with white; and Silver Queen, a good hardy variety.

Ixias.—Plant out of doors from September to December, in a sunny, sheltered position, in light, rich, sandy soil. For indoor cultivation, plant four bulbs in a 5-in. pot in a compost of loam, leaf-mould, and silver sand. Plunge the pot in ashes in a frame or cold pit, and withhold water until the plants appear. When making free growth remove them to the conservatory or greenhouse, placing them near the glass, and give careful attention to the watering. Ixias are also known under the name of African Corn Lilies.

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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.

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