Each plant will cover a s.p.a.ce of at least one foot, and we have seen specimens a yard across, bristling with flower-spikes which are delightfully fragrant. The soil for it should be made firm, just as an Onion bed is treated. Except for this one point, the culture of a hardy annual is all that is necessary. Mignonette does not transplant successfully, but otherwise it is very accommodating. The seedlings are frequently taken off by fly as fast as they appear above ground. Soot and wood-ashes applied in good time are the best preventives; but a second sowing may be necessary, and it should be made immediately the loss is discovered.

==Nemesia==.--For the earliest display of this beautiful annual the first sowing should be made in pots under gla.s.s during this month. In the open border seed may be sown in both May and June. Occasionally a little difficulty is experienced in raising plants under artificial conditions, but those who sow in beds or borders from the same packet of seed during the months named, will find that the culture is quite easy.

==Pentstemon==.--The treatment recommended for the perennial section of Lobelias will exactly suit this flower.

==Phlox Drummondii==.--There is still time to sow. Established seedlings should be gradually hardened by free access of air, until they are ready for the open ground.

==Phlox, Perennial==, may be raised from seed sown in shallow boxes in the early part of this month, and placed in moderate heat. Transplant the seedlings when ready, gradually harden, and plant out in rich soil one foot apart, or put them into vacant places in the shrubbery. Aid with water if necessary.

==Poppy==.--The annual varieties do not well bear transplanting, especially from light soils, and therefore, as a rule, it is advisable to sow where the plants are intended to bloom. They make conspicuous lines and clumps among shrubs; and this is especially the case with the huge flowers of the double cla.s.s. Sow in March and April, and commence thinning the seedlings while they are small. They should ultimately be left about one foot apart. The perennial Poppies may also be flowered as annuals if sown in this month and transferred to open quarters when large enough.

==Schizanthus==.--Elegant half-hardy annuals, which can be grown as specimens for the conservatory, or in quant.i.ty for open borders. Sow in gentle heat, and pot on the seedlings.

==Solanum==.--For a succession of the varieties which are grown for their berries, sow again in heat, and make a sowing of the ornamental-foliaged kinds for sub-tropical gardening. The latter are rather more tender, and need a somewhat higher temperature than the former. They must all have liberal culture to bring out their fine qualities.

==Statice==.--The hardy annual varieties of Sea Lavender may be sown during March or April, and the best results are obtained by starting the seed in pans and planting out when the seedlings are far enough advanced in size. Seed of the hardy perennial kinds should be sown from April to July on light soil, and transplanted later on to flowering quarters.

==Stock, Ten-week.==--The increasing favour shown for Annual Stocks is in part no doubt attributable to the growing appreciation manifested for all kinds of flowers. But it is traceable in a still greater measure to the augmented purity, brilliance, and variety in colour of modern Ten-week Stocks, as well as to the enhanced reliability of seed in producing double flowers. We need say nothing of its perfume, for this is a quality which the most un.o.bservant can scarcely fail to notice.

Although the Ten-week Stock is half-hardy, it must not receive the treatment of a tender annual; indeed, one of the most important points in growing it is to avoid any excess of artificial heat. A little a.s.sistance at the commencement it must have; but the aim should be to impart a hardy const.i.tution from the moment the seedlings appear. We are not advocating reckless exposure to chill blasts, but the necessity of giving air freely whenever there may be a fair opportunity. The best of seed-beds can be made in pans or shallow boxes filled with sweet, sandy soil. In these sow thinly, so that the young plants may have abundant room. Even a little apparent wastefulness of s.p.a.ce will be repaid by stout and vigorous growth. From the middle to the end of the month is a suitable time for sowing.

==Sweet Pea==.--This flower is so much in demand for decorative purposes that a prolonged display should be secured by successive sowings, commencing in this month and continuing until May, or even to June, where the soil and circ.u.mstances are specially favourable. The value of groups of Sweet Peas in borders and for enlivening shrubberies is now thoroughly appreciated, and it is not uncommon to see fine clumps among dwarf fruit trees.

==Tigridia, or Ferraria==.--Finer flowers are generally obtained from the open border than from pots, and the bulbs should be planted out three or four inches deep in March or April. Sandy loam and peat suit them admirably. On a dry border these bulbs will pa.s.s the winter safely, but in wet land it will be perilous to leave them out.

==Verbena.==--It is possible to raise Verbenas in the open from seed sown in drills on light soil, but the attempt is a little hazardous. There is, however, no danger at all in sowing in pans placed in a cool frame.

The plants should be potted immediately they are large enough to handle.

The flowering from this sowing will be rather late, but not too late for a good show of bloom.

==Zinnia.==--The double varieties are now grown almost to the exclusion of single flowers, and the former are so incomparably superior, that they are judged by the severe rules of the florist. With this plant it is useless to start too early. Towards the end of the month a commencement will be made by experienced growers, but the comparative novice will be wise to wait until the beginning of April. Sow in pots filled with a compost of leaf-mould, loam, and sand, and be quite sure there is effectual drainage. Plunge the pots in a temperature of about 60.

==APRIL==

Many half-hardy flowers, such as Acroclinium, =Convolvulus major=, =Linum rubrum=, Nemesia, Salpiglossis, Schizanthus, and others, which at an earlier period can only be sown with safety under protection, may now be consigned to the open ground without the least misgiving. A knowledge of this fact is of immense value to owners of gardens that are dest.i.tute of gla.s.s, for it enables them to grow a large number of flowers which would otherwise be impracticable. Of course, the flowering will be a little later than from plants raised earlier in heat.

==Annuals, Hardy,== which were not sown in March should be got in during this month and in May. A large number of beautiful subjects are available for the purpose, the most popular of which are named on page 373.

==Aster.==--When the seedlings attain the third leaf, they should be p.r.i.c.ked off round the edges of 60-sized pots; later on put them singly into small pots, from which the transfer to the open ground will not cause a perceptible check. As the plants do not thrive in a close atmosphere, it is important to give air freely on every suitable occasion, or they cannot be maintained in a healthy growing condition. A second sowing should be made about the middle of the month, following the routine already advised. A sowing in drills on a carefully prepared bed in the open ground is also desirable, and in some seasons it may produce the most valuable plants of the year. Asters come so true from seed that the bed may be arranged in any desired pattern. Thin the plants early, and continue the process until they are far enough apart for flowering. A distance of eight inches is sufficient for the miniatures, ten inches for the dwarfs, and twelve or fifteen inches for the tall varieties.

==Balsam==.--About the middle of this month will be the time for a second sowing, and the seed may be raised in a frame without artificial heat.

==Canterbury Bell==.--Sow in good soil from April to July and transplant when ready. Under generous treatment these hardy biennials make a beautiful display in borders and the pure colours show with striking effect against the dark foliage of shrubs.

==Carnation==.--Any time from now until August will be suitable for sowing, and if the seed has been saved from a first-cla.s.s strain, a good proportion of very fine flowers will be produced in the following year.

For these plants florists have always considered it important that the potting soil should be prepared months before use, and there are good reasons for the practice. If this is impossible, see that the compost is sweet, friable, and, above all, free from that terrible scourge of Carnations, the wireworm. Even sifting will not rid the soil of its presence with certainty, but by spreading thin layers of the mould evenly upon a hard, level floor, and pa.s.sing a heavy roller over it east and west, then north and south, the wireworm will be disposed of. Or dressing the soil with Vaporite two or three weeks in advance of potting will often prove effectual. Turfy loam three parts, leaf-mould one part, decayed cow-manure one part, with an addition of sharp sand, make a first-cla.s.s compost. Sow in well-drained 48-sized pots, cover the seed very lightly, and place in a frame. Transplant the seedlings immediately they can be handled, when a cool, shaded pit will keep them in hard condition. After six or eight leaves are formed it will be time to plant them out. In the following spring the usual routine of staking and tying must be followed.

==Chrysanthemum leucanthemum== (Marguerite, or Ox-eye Daisy).--Seed of these well-known perennial varieties may be sown any time from April to July. There are several greatly improved forms of this popular flower which may now be had in bloom from May until early autumn. Start the seedlings on a bed of light soil, and when large enough transplant them to positions for flowering in the following year.

==Cyclamen==.--The bulbs which have been flowering in pots through the winter are now approaching their period of rest, and they must not be neglected if they are to make a satisfactory display next season. Water should be gradually diminished until the foliage dies off, and then the corms will require shade, or they will crack. Dry treatment generally results in an attack of thrips, and each root must be painted with some good insecticide to destroy the pest. Cyclamen should never be allowed to become actually dust-dry; but if the pots can be plunged in a shaded moist pit, watering will rarely be necessary. In June the pots may be buried to the rim in a shady spot until August, when it will be time to re-pot and start the bulbs into growth. The chief enemies of Cyclamen are aphis and thrips. Fumigation will settle the former; for the latter, dip the plants in a solution of tobacco-water and soft soap.

==Dahlia==, seedlings must have plenty of water, and be kept free from aphis while in pots. Instead of taking out the leading shoot, as is often done, give it the support of a neat stick. The plants should also be potted on as growth demands, the important point being to maintain steady progress without a check until they can be planted out. At the same time they must be hardened in readiness for removal to the open ground; and if the work is carried on with judgment, the plants will be dwarf, and possess a robust const.i.tution capable of producing a brilliant display of flowers until frost appears.

==Gladiolus==.--a.s.suming that the beds have been properly prepared, we have now only to consider the question of planting, and no better time can be chosen than the beginning of April. Some eminent growers are at the trouble of taking out the soil with a trowel for each bulb. In the opening, a bed of sand and wood-ashes or powdered charcoal is made, on which the root is placed. Others lay them in deep drills, partly filled with a similar light mixture. Whichever method is adopted, the crown of the corm should be left about four inches beneath the surface. The distance between them may vary from twelve to eighteen inches, and the greater s.p.a.ce is a distinct advantage when attending to the plants subsequently. The same rules apply to the planting of clumps.

==Kochia trichophylla==.--Sow seed where the plants are to stand, or in a prepared bed from which they can be transferred to make clumps, lines, or single specimens where the attractive foliage will be most effective.

==Lobelia==.--Early in the month transfer the seedlings to pans or boxes, but the latter are preferable. Not a single flower should be allowed to show until the plants are established in the open ground. Although Lobelias are very attractive in pots, they cannot be satisfactorily grown in them, with the exception of the =ramosa= varieties. But the object is easily attained by potting plants from a reserve bed after they have developed into good tufts. From a stiff soil they can be lifted and potted with facility; and a light soil will cause no difficulty if the bed be soaked a short time in advance. After potting, the plants will give no trouble, except to supply them with water.

==Marigolds== can be raised in a cold frame, and towards the end of the month there will be no risk in sowing in the open ground. The plants thrive in a sunny position, even in scorching seasons.

==Marvel of Peru==.--If not sown last month, there is no time to lose; and with a little care seed can now be germinated without artificial heat.

When the plants come to be transferred to the open, put them, if possible, in sandy loam, exposed to full sunshine.

==Mignonette==.--Successional sowings may be made up to the end of June.

Give each plant plenty of room. By removing the seed-pods as fast as they are formed flowering is greatly prolonged.

==Nasturtium==.--Both dwarf and tall varieties are usually treated as hardy annuals, with the exception of the date of sowing. None of the Nasturtiums are quite hardy, and if sown in March the plants are liable to destruction by late frosts. It is therefore usual to sow in April or May, according to the district, and the growth is so rapid that the plants are full of bloom before the summer has far advanced. Sow on poor soil always.

The =Tropaeolum canariense= (Canary Creeper) may be raised in pans from a March sowing for planting out in May, or seed can be sown in the open during April.

==Petunia==.--- Plants from the first sowing will be ready for small pots, and they must be kept going until the 48-or 32-size is reached. All Petunias rebel if root-bound, and the double varieties are especially impatient in this respect. After each transfer give them a sheltered, shady position and attention with water until they start again. Good drainage and careful ventilation are essential, or the foliage will lose colour. Seedlings intended for beds may be transferred direct from the seed-pans into 60-sized pots.

==Picotee and Pink==.--See the culture prescribed for Carnation.

==Ricinus==.--At quite the end of the month or the beginning of May, seed put into the open ground will produce splendid specimens if treated with a lavish hand. Take out the soil for a depth of eighteen inches or two feet, and fill the s.p.a.ce to within three inches of the surface with a mixture of rich soil and well-decayed manure. Upon each bed thus made place three Ricinus beans in a triangle, and when they are up, thin to one plant at each station, and this, of course, the strongest. This mode of growing Ricinus will astonish those who have been accustomed to allow the plant to struggle through existence in the ordinary soil of a garden border. Plentiful supplies of water must be given in dry weather, and stakes will be necessary to save the specimens from injury by wind. It is too early for putting out those raised in heat.

==Stock, Ten-week.==--Where the requisite quant.i.ty of seed has not been sown, it must be done promptly. If there happens to be a cold frame on a spent hot-bed to spare, it will exactly suit the seedlings when they are ready for transferring. Make the surface fresh by adding a little rich soil, and put the plants in rows three or four inches apart, allowing three inches between them in the rows. In seed-pans, however, s.p.a.ce cannot be afforded in this liberal fashion, but they will make a full return for rather more than the usual s.p.a.cing. To maintain a dwarf habit, it is imperative that the plants should be kept near the gla.s.s.

Where there are no facilities for growing Stocks in the manner described seed may be sown at the end of the month in the open ground, and with a little care there will be a handsome show of bloom. The seedlings are subject to the attacks of turnip fly, which is a terrible foe to them in the seed-leaf stage; in fact, the plants are sometimes up and gone before danger is suspected. A light sprinkling of water, followed immediately by a dusting of wood-ashes, just as they are coming through, will save them, but it may be necessary to repeat the operation two or three times until they are out of peril. A rich and friable seed-bed is one remedy for the fly, for it promotes rapid growth, which speedily places the plant beyond the power of its insect adversary. But if open-ground culture exposes Stocks to one hazard, it saves them from another, as mildew does not attack them unless they have been transplanted. Stocks come so true from seed that it is easy to arrange a design in any desired colours. Sow in drills from nine to fifteen inches apart, according to the height of the variety, and cover the seed very lightly with fine soil. The bed must be protected from birds, and a dressing of soot will keep off slugs. Begin to thin the plants early, but do not forget that some single specimens will have to be taken out when the flowers show, and that is the time for the final thinning.

==Sunflowers== do not well bear transplanting, hence the seed should be sown where the plants are intended to flower. During its brief season of growth, the Sunflower taxes the soil very severely, and to develop its full proportions decayed manure must be freely employed to a good depth, and unstinted supplies of water will be necessary in dry weather.

==Zinnia==.--- The first week of this month is as good a time as any to sow seed, and the conditions named under March should be followed. When the seedlings are an inch high, pot them separately, and place in a close, shaded frame until they are established. Then give air more and more freely while the plants are being trained to bear full exposure.

==MAY==

This is the chief month for bedding, and the crowded state of pits and houses creates a natural anxiety to push forward the work; yet the exercise of a little patience may save many a valuable lot of plants from being injured past recovery. Although the days are long, and perhaps sunny, the nights are often treacherous, especially in the early part of the month. The first business is to prepare the plants gradually for transfer to the open ground by free exposure whenever there is a favourable opportunity. Take off the lights on genial days, and by degrees open them at night, until they can be dispensed with altogether.

About the second week of the month it will generally be safe to put the most hardy subjects on a bed of ashes, under the shelter of a hedge or wall, before planting them. Begin with Antirrhinum, Dianthus, Phlox Drummondii, Stock, and Verbena. A little later on, others which are rather more delicate, as, for instance, Balsam, Begonia, Dahlia, Petunia, Zinnia, &c, can be treated in the same way, until the great bulk of them are in final quarters. Sub-tropical plants, such as Nicotiana, Ricinus, Solanum, and Wigandia, had better be kept under control till the first or second week of June.

==Annuals==.--There is still an opportunity of sowing many varieties, and also to make further sowings of others that are already showing signs of promise. The practice of insuring a succession of all flowers much in demand for vases, of which Sweet Peas are an example, is on the increase, and deserves to be further extended. Another point is that many annuals which require heat in earlier months may with confidence be sown during May in the open ground.

==Hardy Biennials and Perennials==.--Seed of many favourite biennials and perennials may be safely sown in the open ground during May, June, and July, and as a general rule the finest plants for flowering in the following season are obtained from the earliest sowings. The bed for the seed should be prepared with care and a friable loam is the best for the purpose. Immediately the seedlings are large enough to handle, transplant to small rich nursery beds and shift to flowering positions in the autumn. A number of these subjects are dealt with individually in the calendars for the months named, and others which are suitable for the purpose are:

Anchusa italica Aster sub-caeruleus Aubrietia Candytuft (Iberis) Cheiranthus Allionii Chrysanthemum leucanthemum Coreopsis grandiflora Cynoglossum Digitalis Gaillardia Galega officinalis Gaura Lindheimeri Geum Gypsophila paniculata Heuchera Lupinus Cenothera Poppy, perennial Pyrethrum Saxifrage Thalictrum Verbasc.u.m Viola

==Antirrhinum== is admirably adapted for a dry and sunny position, in which it will thrive and flower freely.