Chapter 30

As a conspicuous dot plant in beds this Kochia is extremely useful, or it can be massed in borders, and it also forms an admirable dividing line in the flower garden. For the decoration of conservatories a number should be specially reserved. Specimens may be employed with striking effect on flights of steps, in halls, and many other positions where a plant of perfect outline will serve as an ornament. Height, 2 to 3 feet.

LARKSPUR

Hardy annual

The cultivation of the annual Delphiniums, more familiarly known as Larkspurs, is so simple in character that it calls for little comment. But these handsome subjects are so widely grown, and so greatly appreciated, that they are fully deserving of special mention here. The taller varieties, of which the Stock-flowered strain is the most popular, are best grown in large beds, borders and shrubberies, and the dwarfer kinds in small beds. Apart from their usefulness in the garden, however, the taller sorts of Larkspur are much in request for providing cut material, particularly for the decoration of the dinner-table, and a number of plants should always be grown in reserve for this purpose. It is usual to put in the seed where the plants are intended to stand, and March and April are the best months for sowing. Thin out the seedlings promptly, and give each plant ample room for development, especially when grown on good ground.

Larkspurs may also be sown in September for producing an earlier display in the following year than is possible from spring-sown seed.

LAVATERA

Mallow. Hardy annual and hardy perennial

Countryside gardens owe not a little of their floral brightness to the Mallows. The modern varieties of Lavatera, however, far surpass in effectiveness the flowers commonly met with and are regarded as among the finest subjects for creating an imposing display in tall borders and large beds. For this purpose the annual varieties, Loveliness, _Rosea splendens_, and _Alba splendens_, are the most popular. As transplanting is not to be depended upon, seed should be sown thinly in March, April or May where the plants are wanted to flower. If the ground has been generously prepared fine specimens will result, and each plant should be allowed a spacing of at least two feet for development.

The perennial variety, _L. Olbia_, makes a bold subject for herbaceous borders and shrubberies. Seed may be sown in pans any time from March to August, putting out the plants when large enough for flowering in the following season. Small plants of this variety may with advantage be potted for conservatory decoration.

LOBELIA

Annual and perennial; half-hardy

There are several distinct classes of Lobelia, differing materially in height and habit. For dwarf beds or edgings the _compact_ varieties should alone be used. These grow from four to six inches high, and form dense balls of flowers. The _spreading_ or _gracilis_ class, including _L. speciosa_ and _L. Paxtoniana_, is in deserved repute for positions which do not demand an exact limit to the line of colouring. The plants also show to advantage in suspended baskets, window boxes, rustic work, vases, and any position where an appearance of graceful negligence is aimed at. The _ramosa_ section grows from nine to twelve inches high, and produces much larger flowers than the classes previously named.

All the foregoing can be treated as annuals; and from sowings, made in February or March plants may be raised in good time for bedding out in May. Use sandy soil, and place the seed-pans in a temperature of about 60°, taking care to keep them moist. By the end of March or beginning of April the seedlings will be ready for transferring to pots, pans, or boxes. The last named are very serviceable for this flower, for they afford opportunity of giving the seedlings sufficient space to produce a tufty habit of growth. A gentle heat will start them, and they will give no trouble afterwards, except on one point, which happens to be of considerable importance. It is that the plants should never be allowed to produce a flower while in pots or boxes. Pick off every bud until they are in final positions, and then, having taken hold of the soil, they will bloom profusely until the end of the season.

Lobelias make elegant pot plants, yet, with the exception of the _ramosa_ varieties which are excellent for the purpose, they cannot be grown satisfactorily in pots. The difficulty is easily surmounted by putting them out a foot apart in a good open position, and if possible in a rather stiff soil. When they have developed into fine clumps lift them with care and place them in pots, avoiding injury to the roots. This method will produce a display of colour which cannot be attained by exclusive pot culture.

From the best strains of seed it is possible that a few plants may revert to long-lost characters. Florists are striving to obviate this, but it will require time. Meanwhile there are two ways of dealing with the difficulty. Some growers prefer to raise plants from seed, and take cuttings from approved specimens for the next season. This plan insures exactitude in height and colour, with almost the robust growth and free-flowering qualities of seedlings. But it necessitates holding a stock through the winter, and this may be a serious matter to many. The simpler proceeding, and one which answers well in practice, is to raise seedlings annually and to remove from the pans or boxes any plants which show the least deviation from the true type. A few kept as a reserve will replace faulty specimens which may be detected after planting out.

The handsome perennial section of Lobelias obtains less attention than it deserves, especially as the most ordinary routine culture will suffice for these plants. They are partial to moisture, and also to a deep rich loam. A sowing on moderate heat in February or March will secure plants fit for bedding out in May. They may also be grown entirely without the aid of artificial heat from sowings in June or July. Employ pots or seed-pans, and pot off singly immediately the plants are large enough to handle. The protection of a cold frame or hand-light is all that is necessary during winter, and the planting out may be done in May. These Lobelias reach two feet in height, and make excellent companions to such flowers as _Anemone japonica alba_ and _Hyacinthus candicans_. The dark metallic foliage and dazzling scarlet flowers also have an imposing effect as the back row of a ribbon border.

LUPINUS

Lupine. Hardy annual and hardy perennial

Both the annual and the perennial Lupines are extremely valuable for garden decoration and for supplying an abundance of cut blooms. Each class includes a number of charming colours and many of the flowers are delightfully scented. Not the least of their merits is the fact that Lupines are not particular as to soil; indeed, the annual sorts will often thrive on ground that is too poor for other and more fastidious subjects.

The annual varieties should be sown where intended to flower, as they do not transplant well. Sow the seed in March, April, or May, and subsequently allow each specimen a space of about eighteen inches for development.

_L. polyphyllus_ is a valuable race of perennial Lupines which, from a sowing made in March or April and treated as annuals, will produce a fine show in the following autumn. In order to insure a display earlier in the season, however, many growers of these flowers prefer to sow in June and July of the preceding year. Two varieties of _L. arboreus_ form large bushes which are distinctly ornamental when in full bloom. The seed should be sown in June or July and the seedlings transplanted to flowering positions before they become very large.

MARIGOLD

Tagetes. Half-hardy annual

Marigolds of several classes are valued for the profuse display of their golden flowers in the later summer months. The choicest are the so-called French, or _Tagetes patula_, which have richly coloured flowers, and some of the varieties are beautifully striped. For their high quality these Marigolds are judged by the florists’ standards. The African, or _Tagetes erecta_, make large bushy plants with flowers ‘piled high’ in the centre; the colours are intense orange and yellow. in various shades. The bedding section is represented by the dwarf varieties of _Tagetes patula_, or Dwarf French Marigolds; also by _Tagetes signata,_ a very neat plant with fine foliage and rather small orange-coloured flowers, produced in great abundance. In hot seasons and on dry soils this proves an admirable substitute for the Calceolaria, which does not thrive when short of food, whereas the Tagetes bears drought, the shade of trees, and a poor soil with patience, and up to a certain point with advantage. Sow all these in March in a moderate heat, and prick the plants out in the usual way, taking care finally to allot them sunny positions. Seed may also be sown in the open ground at the end of April or early in May.

The section of Pot Marigolds, _Calendula officinalis_, includes two remarkably handsome varieties, Orange King and Lemon Queen; the flowers of both are large, double, perfectly formed, and are worth a place in the choicest garden. These may be sown on the open border in March, April, and May, and the best place for them is in the full sun on a rather dry poor soil, but they are not particular, provided they are not much shaded.

MARVEL OF PERU

Mirabilis Jalapa. Half-hardy perennial

This flower may be treated either as an annual or as a biennial. As an annual the plants are very compact and effective, the leaves and flowers forming round glittering masses in the late summer and autumn months. When the roots are saved through the winter and planted out in April larger plants are obtained, but there is no advance in quality over the very neat and sparkling specimens raised from seed in spring. Sow in heat in March and April, and treat in the same manner as Balsams until the time arrives for planting out. A rich sandy loam suits them, and they like full exposure to sunshine.

MIGNONETTE

Reseda odorata. Hardy annual

Mignonette is so much prized that we must devote to it a paragraph, although there is little to be said. In many gardens plants appear year after year from self-sown seeds, and it will therefore be evident that Mignonette may be grown with the utmost simplicity. As a border plant we have but to sow where it is to remain, at different times from March to midsummer; the one important point is to make the bed very firm; in fact the soil should be trodden hard. It is imperative to thin early and severely, for any one plant left alone will soon be a foot in diameter, and in some circumstances cover a much larger area. Where bees are kept and space can be afforded, seed should be sown in quantity, for Mignonette honey is of the finest quality in flavour and fragrance. In pot culture it should be remembered that Mignonette does not transplant well; therefore, having sown, say, a dozen seeds in each of a batch of 48-or 32-sized pots, firmly filled with rich porous soil to which a little lime or mortar rubble has been added, the young plants must be thinned down to five, or even three, in each pot, as soon as they begin to grow freely. If small plants are wanted early, leave five in a pot; if larger specimens are wanted later, leave only three, or even only one. For winter and spring, sow in August and September and keep them as hardy as possible until it becomes necessary to put them under glass for the winter. A further sowing for succession may be made in January or February. Several strains of different tints are now at the command of cultivators of this favourite flower.

MIMULUS

Monkey Flower. Hardy perennial

This flower will grow in almost any soil, although a moist retentive loam and a shady situation are best adapted for it. There are many varieties, differing in height, and all are worth growing, both in pots and borders. If sown in February or March, and treated as greenhouse annuals, they will flower in the first year. It is easy to raise a large number of plants in a cold frame, and they make a rich display in borders and beds later in the year. Sowings in the open ground during summer will supply plants for blooming in the following season, but the most satisfactory course is to grow them as annuals, and at the end of the summer consign them to the waste heap. The Mimulus is quite hardy, and the most ordinary care will suffice for it. Water in plenty it must have, or the flowering period will be curtailed.

The well-known Musk is a Mimulus (_M. moschatus_), and is as easily grown from seed as other varieties. It makes a valuable pot plant.

MYOSOTIS

Forget-me-not. Perennials, hardy and half-hardy

AT one time an impression prevailed that all the varieties of Myosotis were semi-aquatic, and could only be grown satisfactorily in very damp shady places. And it is quite true that most of them bloom for a longer period in a moist than in a dry soil. Still, they all flower freely, and last a considerable time in any garden border.

The only half-hardy variety that need be referred to is Sutton’s Pot Myosotis, which is a delightful subject for flowering indoors at Christmas time; and as Forget-me-nots are everywhere welcome, the practice of growing plants in pots is rapidly increasing. Seed should be sown in a cold frame in June, and the seedlings can be potted on as required, taking care from the commencement to avoid crowding as a precaution against mildew, to which the plants are very liable. The strain referred to produces fine free-growing specimen plants, and a batch should always be in reserve for cutting. For table decoration in winter Forget-me-nots are very telling.

All the hardy varieties may be sown from May to July for a brilliant display in the following spring. The seed should be put into a prepared seed-bed under the shelter of a wall or hedge; and in autumn the plants must be transferred to blooming quarters at the earliest opportunity.

Myosotis make an extremely effective groundwork for spring bulbs, for which purpose _M. dissitiflora_ is the most valuable.

NASTURTIUM—_see_ TROPÆOLUM

NEMESIA STRUMOSA SUTTONI

Half-hardy annual

THIS beautiful South African annual is remarkable for its floriferous character, long duration of bloom, and diversity of colour. Since we introduced it to this country in 1888 it has attained great popularity as a pot plant for table decoration, and some of the most resplendent bedding effects in public parks and gardens have been secured with this flower.

For an early show of bloom sow in pots or pans in March under glass, using a compost consisting largely of good fibrous loam, with the addition of a small proportion of wood ashes. No more heat than necessary should be used, and when the seedlings are large enough to handle prick them off and gradually harden for planting out in May. Other sowings may be made in May and June, and at this period of the year the seed germinates most quickly in boxes placed in a cool shady spot out of doors. In early summer seed may also be sown in the open border, and by thinning to a distance of six or eight inches sturdy plants will be secured, which will remain in bloom until quite late in autumn.

For winter and early spring flowering in pots seed should be sown in August or September. There must be no attempt at forcing, or attenuated worthless plants will result. A further sowing may be made in January for blooming in the later spring months.

Like the seed of Verbena, Furze, and some other subjects, the germination of Nemesia under artificial conditions is somewhat capricious, but no difficulty will be experienced with open-air sowings.

NICOTIANA

Tobacco. Half-hardy annual

The delicious fragrance of the Tobacco plant, especially during the morning and evening, has made it a great favourite in the greenhouse and conservatory, as well as in beds and borders near frequented paths.

As a pot plant too, the Nicotiana is exceedingly useful, the large sweet-scented white, soft pink, and rich red coloured flowers being very attractive. A group of plants placed in the porch will, in the earlier and later hours of the day, as the door is opened, fill the house with their delightful perfume. Seed may be sown from January to June, and a continuance of bloom may thus be secured during nearly nine months of the year. Prick off the seedlings as soon as they are fit to handle, for if sown too thickly they are liable to damp off rapidly. Gradually harden off if required for planting out in May or June. In some places, more especially in the South of England, Tobacco seed sown on an open sunny border early in May will produce fine plants that will flower freely in August.

PANSY

Viola tricolor. Hardy perennial

The popularity of this flower has been greatly extended and the culture simplified since it became the practice to raise the required number of plants every year from seed. For all ordinary purposes the trouble of striking cuttings and keeping stocks in pots through the winter is mere waste of labour and pit-room. The Pansy is a little fastidious, but not severely so. It thrives in a cool climate, with partial shade in high summer, and in a rich, moist, sandy soil. Notwithstanding all this, the Pansy will grow almost anywhere and anyhow; but as fine flowers of this old favourite are highly prized, the plant should be treated with reasonable care to do justice to its great merits.

A thick sowing is very liable to damp off: therefore sow thinly, either in pots or boxes, in February and March. The thin sowing, moreover, renders it possible to take out the forward plants without disturbing the remainder. In due course transplant into pans or boxes of good soil, and place in some cool spot where the plants may gradually harden off. When they have become stocky, remove to beds or borders, with balls of earth attached to the roots. Should the surrounding soil become set by heavy rain or by watering, a slight stirring of the surface will prove beneficial.

Seed sown in the open ground during the summer months will readily germinate, and the seedlings need no attention beyond thinning to about six inches apart until they are ready for transferring to their proper positions, where they will produce a mass of bloom in the following spring.

The Pansy puts forth its buds very early in the year. Whether they are particularly tasty, or the scarcity of young vegetable growth gives them undue prominence, we know not, but certain it is that sparrows show a marked partiality for them. And having once acquired a taste for the buds, these impudent marauders will not leave them alone; they evidently regard Pansies as the perfection of a winter salad. Their depredations can be prevented by an application of water flavoured with quassia or paraffin oil, which must be repeated after rain.

PELARGONIUM

Greenhouse perennial

All kinds of Pelargonium may be raised from seed with the certainty of giving satisfaction if the work be well done. An amateur, who contributed to the production of symmetrical flowers in the Zonal section, found that under ordinary treatment Zonals began to bloom in one hundred days from the date of sowing the seed, and some of those that flowered earliest proved to be the finest. The cultivator will soon discover that one rule is important, and that is to sow seed saved from really good strains. The simplest greenhouse culture suffices to raise Pelargoniums from seed. Some growers sow in July or August; others in January or February. The summer sowing necessitates careful winter keeping, and the flowers appear earlier than those from spring-sown seed. But the spring sowing is the easier to manage, and is recommended to all beginners. Any light, sandy loam will serve for these plants, and it is well to flower the principal bulk of them in 48-and 32-sized pots, for if grown to a great size the date of flowering is deferred without any corresponding advantage.

PENTSTEMON

Hardy perennial

Penstemons when grown as half-hardy annuals are a valuable addition to beds and borders, where they produce a brilliant effect in summer. In borders it is not advisable to plant singly, but they should be employed in groups of not less than one dozen. It is also important to sow a strain consisting principally of scarlet and pink shades with white markings, as well as white flowers; under fair conditions there will be a profusion of richly coloured blooms on stately spikes about two feet high. Sow in heat during February or March and plant out in genial weather. It is not necessary to keep them after flowering has finished, although seedling Pentstemons on comparatively dry soil in favourable districts scarcely feel the winter. Seed may also be sown in June, in the manner usual with hardy perennials, and the plants will bloom in advance of those which are spring-sown.

PETUNIA

Half-hardy perennial

The Petunia affords another example of the immense strides accomplished in the art of seed-saving. Formerly the colours were few, and the blossoms comparatively insignificant. Now the single strains produce large flowers, beautiful in form, including self colours and others which are striped, blotched, and veined, in almost endless diversity. Some are plain-edged, others elegantly fringed. The double varieties also come so nearly true to their types that there is little necessity for keeping a stock through the winter. Plants raised from seed of the large-flowered strain embrace a wide range of resplendent colours, and the doubles are perfect rosettes, exquisitely finished in form and marking.

The only way of obtaining double seedlings is to save seed from the finest single blooms fertilised with pollen of good double flowers. Plants raised from such seed may be relied on to produce a fair proportion of double flowers of great beauty, and those which come single will be of the large-flowered type.

The dwarf varieties attain the height of five to eight inches only, and make admirable edging and bedding plants. The taller strains range from one to two feet, and are handsome subjects for border and shrubbery work. Both dwarf and tall sections are sufficiently brilliant and free-flowering to produce a beautiful display as pot plants in the greenhouse and conservatory.

For indoor decoration, the third week in January will be early enough to commence operations. Two parts of leaf-mould, one of loam, and one of sharp sand, make an excellent soil for them. Fill the pots or seed-pans within half an inch of the rim, and press the soil firmly down. Sow thinly on an even surface, and cover the seed with almost pure sand. Keep the pots or pans uniformly moist with a fine rose and a light hand, and in a temperature of about 60°. Greater heat will render the seedlings weak and straggling. From this condition it will take some skill and much time to redeem them; indeed, they may not produce a good display of flowers until the season is well-nigh over. Just as the seed is germinating is a critical time for Petunias, and a little extra watchfulness then will be fully repaid.

In February the sun has not sufficient power to do mischief, so that shading is generally unnecessary. An even temperature and freedom from draughts should insure seedlings strong enough to prick off by the end of that month. Put the plants into seed-pans about an inch apart, so that the first leaves just touch the soil, still using a light compost.