Part 11

Chionodoxa Luciliae (Glory of the Snow).--A pretty hardy spring-flowering bulbous plant. The blossoms, from five to six in number, are produced on gracefully arched stems, 4 to 8 in. high, and are nearly 1 in. across, star-like in form, and of a lovely blue tint on the margin, gradually merging into pure white in the centre. Fine for growing in clumps. Plant the bulbs in autumn in equal parts of loam, peat, and sand. It succeeds fairly well in the open, but reaches perfection in a cold frame, where the flowers will be produced in March. Height, 6 in.

Choisya Ternata (Mexican Orange).--A pretty evergreen wall plant, bearing sweet-scented white flowers in July. The bush is round, and extremely ornamental when grown in the shrubbery. It delights in a mixture of peat and loam, and is propagated by cuttings placed in sand under a handglass, or, better still, by layers of the lower branches in March, detaching them in the autumn. While young it makes a fine pot-plant. Height, 6 ft.

Chorozemas.--These Australian plants delight in rich turfy peat mixed with fibrous loam, leaf-mould, and coarse sand. When freshly potted they should be given a warm part of the greenhouse and watered cautiously till they are in full growth, when a little clear liquid manure may be given twice a week. May be shifted at any time except from October to Christmas. Propagated by cuttings about 1 or 2 in. long of half-ripened young wood taken in July or August, and inserted in sand under a glass. When the pots are full of roots shift the plants into larger sizes. They bloom nearly all the year round, especially in the winter and spring. The plants have rather a rambling habit, and are usually trained over balloon or pyramidal trellises; but this trouble can be spared by cutting them back freely and employing a few light sticks to keep them within bounds.

Christmas Rose.--See "Helleborus."

Chrysanthemum.--The Chrysanthemum will grow in any good mould, a naturally good soil being often preferable to an artificial one. Where the ground is not in good condition a compost may be made of one-half rich loam and one-fourth each of well-rotted manure and leaf-mould, with sufficient sand to keep it porous. Cuttings taken in November or December make the finest exhibition plants. Pot them singly in 2-in. or 3-in. pots; stand them on coal ashes in a cold frame, and re-pot them in March or April in 6-in. pots, making the soil moderately firm. When they attain the height of 6 in. pinch off the extreme point of the shoot, which will induce the growth of side-shoots. Shift the plants from time to time into larger pots, until at the end of May they receive their final shift into 10-in. pots, after which they must not on any account be stopped. In June they may be placed in a sheltered and partially shaded part of the open border, standing the pots on pieces of slate to prevent the ingress of worms. Syringe the leaves each day and give the roots a liberal supply of liquid manure. When the flower-buds begin to show colour, discontinue the manure water. Thin out the flower-buds, leaving two or three only of the strongest on each stem. At the end of September they must be removed to a cool greenhouse to flower. Where there is no greenhouse a canvas structure may be erected to protect them from the cold. Good plants for the border may be raised from cuttings in March or April. These should be kept close in a frame until rooted, then gradually hardened off, and planted in rich soil. Syringing with soot-water twice a week until the flower-buds appear will darken the leaves and deepen the colour of the flowers.

Chrysogonum Virginianum.--A free-flowering, hardy, herbaceous plant, best grown in loam and peat. Its deep-golden, star-shaped flowers are produced from June to September. Cuttings of ripened wood planted in sand and subjected to moist heat will strike. It may also be increased by dividing the root. Height, 1 ft.

Cichorium Intybus.--This is a hardy herbaceous plant producing blue flowers in July. It will grow in any soil and needs no special treatment. Seeds may be sown either in autumn or spring. Height, 2 ft.

Cimcifuga.--These hardy herbaceous plants will flourish in any good garden soil and are easily raised from seed, or they may be increased by dividing the roots. Various species produce their flowers from May to September. Height, 1 ft. to 3 ft.

Cinerarias.--These grow well in a soil composed of equal parts of rich loam, leaf-mould, and thoroughly rotted horse-dung, liberally mixed with sharp sand. They are increased by seed, cuttings, or off-sets. The seed should be sown as soon as it is ripe and covered with the lightest layer of the finest soil; or it may be sown during March on a slight hotbed. Keep the young plants shaded from the sun, and as soon as they can be handled put them into 3-in. pots. Return them to the hotbed and keep them shaded till established, then gradually harden them off, and towards the end of May they may be planted in the open, choosing a sheltered situation. The first flower-stem should be cut out close to the bottom, but the side-shoots may either be reduced or not. At the end of September place them in a cool frame to bloom during the following month. They require to be well supplied with manure water. As soon as the plants have done flowering, cut them down, and keep them well supplied with water, and in March shake them out of their pots and plant each sucker separately. Other sowings may be made in April and May. To obtain cuttings, when the plants have flowered cut them down, and when they have again grown large enough take the cuttings and plant them in pots filled with the above compost, putting a layer of silver sand on the top. When the cuttings have made shoots 3 in. long, pinch off the tops to make the plants grow bushy. Re-pot when the roots are well grown, but before they get matted, and give occasionally a little liquid manure. Keep a good look-out for green fly, and as soon as this nuisance appears fumigate the plants with tobacco paper. An excess of fumigation is injurious. Those that have bloomed in pots may be planted in the north border of the garden in July, where they may shed their seed, from which early plants will be produced. They may also be increased by off-sets. If the old plants are cut down and kept well watered they will throw up suckers, which may be separated and potted off into thumb pots, transplanting into larger ones when required. They must always be kept shaded from the sun. A cool frame suits them in summer, and being nearly hardy, should never be subjected to a forcing temperature, sufficient heat to keep away frost and damp being all that is necessary.

Cinnamon Plant.--This is a stove or greenhouse plant, and requires a loam and peat soil. Cuttings of the ripe wood strike freely.

Cissus Orientalis.--Useful climbing plants which delight in a light, rich soil. They are increased by cuttings planted under glass and kept in a gentle, moist heat.

Cistus (Rock Rose).--A compost of loam and peat suits these beautiful evergreen shrubs. They may be increased by layers, ripe cuttings covered with a hand-glass, or seed. Though the plants are pretty hardy it is advisable to afford them protection during severe frosts. June is their flowering month. Height, 3 ft. to 6 ft.

Citrus Japonica.--A greenhouse evergreen tree, requiring a rich loamy soil. Very little water should be given it while in a growing state. It is generally budded on an orange or lemon tree and plunged in a bottom-heat. June is its flowering season. Height, 5 ft.

Cladanthus.--The annuals may be sown in the open in April to flower in July. The greenhouse evergreens may be propagated by cuttings under glass. These produce flowers in June.

Clarkia.--These hardy annuals make a pretty display in the borders during summer. Seed ripens plentifully, and merely requires sowing in the open in March, or in September if protected in winter. The bloom lasts from June to September. Height, 18 in.

Claytonia Sibirica.--A hardy herbaceous plant which yields light yellow flowers in June. It is not particular as to soil, and may be raised from seed sown either in autumn or spring. It stands division of the root. Height, 4 ft.

Clematis (Virgin's Bower).--These plants like a dry situation. They will grow in smoky districts, and may be increased by cuttings of firm side-shoots under a glass in summer or by layers in September. With the protection of a greenhouse they come into flower early in spring. They are the most beautiful of all flowering hardy climbers. The stove and greenhouse varieties are best planted in loam and peat, though they will thrive in any light soil. Any good garden soil suits the hardy kinds. The herbaceous varieties are increased by dividing the roots early in spring. They bloom at various periods. After they have ceased to flower, the Jackmanni and Viticella sections should be cut down to within 9 or 12 in. of the ground. The Patens and Florida do not require pruning; those of the Lanuginosa should be cut back moderately, but not too close. A good dressing of leaf-mould and manure should be dug in about November. Heights vary from 2 ft. to 20 ft. (See also "Traveller's Joy.")

Cleome.--The species of this genus are very pretty and free flowering, some being half-hardy climbers notable for their foliage. They like a rich, light soil. Cuttings of the stove kinds root freely under a glass. Some of the annual species require to be sown in a hotbed frame or in a hot-house, then potted off and placed with tender annuals. The hardier ones may be sown on a hotbed, and afterwards planted out in a sheltered position. They flower in May, June, and July. Heights vary from 6 in. to 8 ft.

Clethra Alnifolia.--This hardy deciduous shrub bears in September deliciously scented pure white flowers on the side-shoots of the previous year's growth. It needs a light soil and a dry, sunny situation. It may be propagated by cuttings placed under glass in sandy loam, or by suckers taken when the leaves have fallen, but is more generally increased by layers. Height, 3 ft.

Clianthus.--A genus of very elegant, free-flowering, evergreen greenhouse shrubs. They flourish in the border of the conservatory (or against a south wall if protected from cold) in an equal mixture of loam, peat, and sand. Cuttings root freely in the same soil under glass. Seed sown early in spring produce flowers the first year, in May. Height, 3 ft. to 4 ft.

Clintonia.--Very pretty half-hardy annuals; useful for beds, edging, pots, or rock-work. They produce an abundance of Lobelia-like flowers in August. Sow the seed in the open in spring. Height, 6 in.

Clitoria.--A greenhouse climbing or trailing plant, which thrives in a mixture of loam, peat, and sand. Cuttings will strike in heat, but it is more readily grown from seed.

Clivias (Caffre Lilies).--Most beautiful evergreen plants for the greenhouse. The soil most suitable for them is a compost of leaf-mould, loam, and sand. Give a liberal supply of water when in full growth, but from September to February keep them only moderately moist. Shade from strong sunshine, and keep the temperature at from 60 to 70 degrees. They will not bear much disturbance. Seed may be sown in bottom-heat early in spring, or they may be increased by suckers.

Cobæa Scandens.--This rapid climber is well adapted for the conservatory, but it will thrive in the open air if the root is protected during the winter. If planted against a rough wall its tendrils will catch in the crevices and support it without any assistance. It requires plenty of room and a rather poor soil, otherwise it runs to leaf instead of to bloom. The tops of the shoots should be constantly pinched off, to induce thickness of growth. Cuttings of firm side-shoots taken in summer will root under glass in a little moist heat; but it is best raised from seed, sown sideways, in a hotbed in March. Its blue and purple flowers are produced in August. Height, 10 ft. to 20 ft.

Cob Nuts.--See "Filberts."

Cockscomb.--These tender annuals should be sown on a moderate hotbed in March or April, in pans of leaf-mould and sand, covering with 1/4 in. of soil. When a couple of inches high place them in small pots, replace them on the hotbed, and give shade till they have taken fresh root. When the weather is favourable let them have a moderate amount of fresh air. Afterwards shift them into larger pots, and when the combs are full grown place them in the greenhouse, taking care not to allow any damp to lodge on them, at the same time supplying them well with water and all the air possible. Height, 9 in. (See also "Celosia.")

Codonopsis.--These hardy perennials are best grown in sandy peat and loam. They are easily raised from seed or cuttings, and produce their flowers in July and August. Height, 1 ft.

Coix Lachryma (Job's Tears).--A half-hardy, annual, ornamental grass bearing clusters of beautiful pearl-like seeds. Sow in a warm spot in April, barely covering the seed with fine soil, and keep the surface of the ground moist till germination is ensured. Height, 1-1/2 ft.