This volume owes its existence principally to the repeated requests of a number of our fair patrons, and amateur supporters, whose enquiries and wishes for a practical manual on Floraculture, at last induced us to prepare a work on the subject. That now offered is given unaffectedly and simply as a plain and easy treatise on this increasingly interesting subject. It will at once be perceived that there are no pretensions to literary claims—the directions are given in the simplest manner—the arrangement made as lucidly as was in our power—and the whole is presented with the single wish of its being practically useful. How far our object has been attained of course our readers must judge. Nothing has been intentionally concealed; and all that is asserted is the result of minute observation, close application, and an extended continuous experience from childhood. We pretend not to infallibility, and are not so sanguine as to declare our views the most perfect that can be attained. But we can so far say, that the practice here recommended has been found very successful.
Some very probably may be disappointed in not having the means of propagating as clearly delineated as those of culture; but to have entered into all the minutiæ connected therewith, would have formed materials for two volumes larger than the present. We might have described that branch, as it has already been done in works published both on this continent and in Europe. In one of the former it is said, "You may now propagate many kinds (Exotic Plants) by suckers, cuttings, and layers, which should be duly attended to, particularly such as are scarce and difficult to be obtained." And the directions given in one of the most extensive works in Europe on the propagation of an extensive genus, varied in character and constitution, run thus: "Cuttings of most kinds will strike root. From the strongest growing kinds, take off large cuttings at a joint, and plunge them in a pot of sand under a hand-glass in the bark bed. Of the smaller kinds take younger kinds, and put them under a bell-glass, also plunged in heat. The sooner the plants are potted off after they are rooted the better."
Such instructions to the inexperienced, are imperfect and unavailing, which, we flatter ourselves, is not the character that will attach to the present work. We are well aware that there are persons, who, to show their own superior abilities, may cavil and say that there is nothing new. To such critics it may be answered, if arranging, simplifying, digesting, and rendering Floraculture attainable by the humblest capacity, with useful lists and tables on a plan quite novel, as we believe—offer nothing new, it may at least be called an improvement. However, we submit all to a generous public, to whom we are already under many obligations.
Hibbert & Buist.
Philadelphia, April 18th, 1832.
In presenting this work, constructed as a monthly calendar, which is the most simple and easy method to convey the necessary operations of the year, considerably more labour has been expended, than was at first expected, to render it as accurate as possible. Some verbal mistakes may have been overlooked in the botanical names. Where such occur, the list of names at the end of the volume will enable the reader to correct them; as well as the accentuation. For such other errors as may be discovered, the indulgence of the reader is solicited.
Frequently, in the description of plants, there are Botanical and English names compounded, in order the more clearly to elucidate their several parts to those who are not fully acquainted with scientific terms. The description of the colour of flowers and habits of plants will be useful to such as are at a great distance from collections, in enabling them to make selections judiciously.
Those plants described and recommended have all, with a few exceptions, passed under our own observation, and are generally such as are most worthy of attention, either for beauty of flower, foliage, or habit, together with those celebrated in arts and medicine. Many may possibly have passed unobserved, either from their being very generally known, or difficult to obtain; but in no case has there been suppression from selfish motives. Where the words "our collections" occur, it is meant for those of the country generally, and especially those immediately in the vicinity of Philadelphia. In all our observations, no regard has been paid to what has been written by others, either in the way of depreciation, or of particular appreciation. Perhaps some other cultivators may differ from us respecting culture and soil; however this may be, we rest satisfied, as our work is designedly and professedly given as the result of our own experience, the plan laid down is our own routine of culture, and the soils are those which we adopt. We do not say that there is no soil in which the plants will not grow better, fully aware that every art and profession is subject to improvement. The table of soils has been constructed at the expense of much labour, and condensed as much as possible; to every one that has a single plant it will be found invaluable. Many are the publications in Europe on Gardening and Floraculture, the directions in which, when practised in the United States, prove almost a perfect dead letter. A work adapted to the climate must be the guide in this country, and not one which is foreign to us in every respect. On this account a work like the present has been a desideratum, considering the rapidly increasing and interesting advancement of the culture of flowers amongst the fair daughters of our flourishing republic.
To aid them and others seeking information in this instructive and delightful pursuit—to enable them to examine more minutely, and judge more correctly of the qualities, properties, and beauties of plants—have been prominent objects in this publication. Here, as knowledge is increased, the warmer will be the devotion of the delighted student; and as the mind correspondingly expands, the desire for further information will keep pace—advancing constantly in the development of nature, the mind will participate in the enjoyment, and become meliorated and purified—as the study of nature's works inevitably lead to the contemplation of nature's God, and the result of the whole prove a harmonious combination of personal gratification and mental improvement.
Jasmìnum, Jasmine. A few species of this genus are celebrated either for the Green-house or Rooms. J. odoratíssimum, Azorian, has very sweet-scented yellow flowers, blooming from April to November. J. revolùtum is the earliest flowering one, and of the same colour; it is apt to grow straggling, and should be close pruned as soon as done blooming, which will be about June. J. grandiflòrum is frequently called Catalonian, and should be pruned early in spring to make it bloom well, especially old plants. J. officinàle is a hardy climbing plant for arbours, walls, &c. There are several varieties of it, and it is reported there is a double one.
Page 104, dele "L. Silaifòlia has leaves bipinnatifid and smooth; segments wedge-shaped and cut; L. dentáta and L. ilicifòlia, are the finest;" and place it to "Lomàtia," page 103.
Page 321, ninth line from top, dele "Pèdulis."
At all times be very careful of the temperature of this department, and more especially at this season of the year, as a few minutes' neglect might materially injure many of the delicate plants. The thermometer ought to range between 58° and 65°. In fine sunshine days, admit a little air by having some of the top sashes let down, one, two, or three inches, according to the weather, and let it always be done from eleven to one o'clock; but by no means in such a manner as to cause a draught in the interior of the house, which would be very prejudicial. Therefore be always cautious during cold weather, in administering that necessary element to vegetation, which is so conducive to health.
The Hot-house ought never to be left entirely to inexperienced persons, because they are not aware of what might be the result of inattention even for an hour. Attention to the following observations will obviate every difficulty. About this season of the year, frost generally sets in very severe in the middle states. Suppose the day may have all the clemency of spring, the night may be directly the reverse. Every precaution is necessary to guard against extremes. According to what was said last month, it is understood that the shutters are put on every night at sundown, and in severe weather, they must be put on as soon as the sun goes off the glass. If the shutters are omitted till late in severe frost, it will so reduce the heat of the house, that you cannot overcome it by fire until near midnight; and when done, the fire or fires have been made more powerful than they ought to be, proving uncongenial to the plants that are near the flues. The air, as above directed, having been taken off the house at one o'clock, as soon as the mercury begins to fall in the thermometer, kindle the fire, and supposing it is anthracite coal, in twenty minutes, with a good drawing furnace, the heat will operate in the house. If a coal fire, kindled about four o'clock, it will require an addition about six, and then may be made up again about nine or ten, which will suffice until morning. The quantity must be regulated by the weather. If the fuel is wood, it must be attended to three or four times during the evening; and when the mornings are intensely cold, one fire in the morning is requisite. When there are bad drawing furnaces the fires must be made much earlier, perhaps by two or three o'clock, which will be easily observed by the time the fire takes effect upon the air of the house. The temperature ought never to be under 55° of Fahrenheit.
To do this judiciously, is so necessary to vegetation, and so requisite to understand, and yet the knowledge so difficult to convey to others (being entirely acquired by practice,) that if the power was in man to impart it to his fellow-men, he would possess the power of perfecting a gardener by diction. However, the hints on this important point of floraculture, will be as clear and expressive as can at present be elicited. All plants in this work that are aquatic, shall be specified as such; and those that are arid shall be duly mentioned. All others will come in the medium.
All the plants must be looked over every day, and those watered that appear to be getting dry on the top. It must be strictly observed not to give water to any but such as are becoming dry, and let it be given moderately at this season. Two or three days may perhaps elapse before it need be repeated. There is not so much liability to err at present in giving too little, as in administering too much. Vegetation amongst the stove or Hot-house plants will soon begin to show, and the soil will prove uncongenial if it is impregnated with stagnant moisture. Small plants should always be watered with a pot, having what is termed a rose upon it. The surface of the rose, that is, where it is perforated with small apertures, ought to be level, or a little concave, which would convey the water more to a centre, and make neater work, by preventing any water from being unnecessarily spilt in the house. The size of the pot will be regulated by the person to suit the conveniences of the place. Water, when applied either to the roots or foliage of the plants, should be about the medium temperature of the house. The cistern, built on the plan herein recommended, will always give this, and sometimes more, which can easily be reduced by adding cold water. Where there are no cisterns, a tank or barrel might be in the house, in which the water could stand for one night or more, as is most suitable. When water is given without being thus aired, it chills the roots, prevents a luxuriant growth, injures the fresh and healthful appearance of the foliage, and too frequently gives to all the plants a sickly hue.
In this department, insects begin to increase by hundreds, and too frequently their ravages are very obvious before their progress is arrested. We will treat of those which are most common, under their respective heads, with their nature and cure, as far as has come under our observation.
Aphis rosæ, of the natural order of Hemiptera, or what is commonly known by Green Fly, Green Lice, &c. infect plants in general, and are particularly destructive in the Hot-house to Hibíscus ròsa-sinénsis, Asclèpias, Crássula coccínea, Alstrœmèria, and many other plants of a free growing nature. They attack the young and tender shoots at the point, leaving a dark filthy appearance on the foliage. Many remedies for their destruction have been offered to the public by various writers, each equally secure in his own opinion. Extensive practice alone can show the most easy and effectual cure. Fumigating with tobacco is decidedly the most efficacious, and in the power of any to perform. Take a small circular furnace, made of sheet iron, diameter at top twelve inches, and at bottom eight; depth one foot, having a grating in it to reach within three inches of the bottom, which will leave space for the air to pass, and where the ashes will fall and be kept in safety, having a handle like a pail to carry it with. This, or any thing similar, being ready, put in it a few embers of ignited charcoal; take it into the centre of the house, and put on the coals a quantity of moist tobacco stems. If they attempt to blaze or flame, sprinkle a little water over them; and as they consume, continue to add tobacco until the house is entirely full of smoke, observing always to do it in still, cloudy weather, or in the evening. If it is windy, the smoke is carried off without having half the effect, and requires more tobacco. The house must be closely shut up. There are several plants whose foliage is of a soft downy nature, such as Helitròpiums, Callacárpas, Sálvias, and many of the Lantànas, Víncas, with several others, that cannot stand, without danger, strong fumigation. These should be put low down in the house, or under the stage. These fumigations will have to be repeated frequently, the time for which will easily be perceived; and, when required, ought not to be delayed. Several species and varieties of the same genus, Aphis, can be destroyed in the like manner.
Acaris tellurius, or red spider, is caused by a dry atmosphere, and its havoc generally is obvious before it is arrested. With its proboscis, it wounds the fine capillary vessels; and if the leaves are fine, they will appear as if probed with a needle, and yellowish around the wound. If they have farther progressed in their destructive work, the leaves will prematurely decay. On this appearance, turn up the leaf, and you will see them running about with incredible swiftness. Their body is of a blood colour, and their feet, eight in number, light red. When very numerous, they work thick webs on the under side of the leaf, and frequently all over it, forming a mass of half dead plants, decayed leaves, and thousands of spiders. The most effectual remedy is a thorough syringing with water, and profusely under the foliage. This being done every evening, will subdue and eventually banish them. Had the house been syringed two or three times per week, these intruders would not have appeared. It is said by some writers, that watering only reduces them to a temporary state of inaction, and will not destroy them. Laying aside the many prescribed nostrums, we assert that the pure element is the most effectual cure, as well as the most easy to be obtained.
Thrips, order Hemiptera, are insects so minute as scarcely to be perceptible to the naked eye. They generally lurk close to the veins of the leaves of plants, and frequently attack esculents. When viewed through a glass, they are seen, when touched, to skip with great agility. The larva is of a high brown, or reddish colour. The thrip has four wings, and walks with its body turned upwards. It frequently attacks the extremities of tender shoots, or young leaves, which become shrivelled, brown, and will rub to dust easily between the thumb and finger. When any leaves or shoots are perceived to be so, if you do not observe the green fly, expect the thrips. They may be destroyed by a fumigation of tobacco, in the same manner as the green fly. By the simple and expeditious method of fumigation, these insects and several others may be destroyed effectually at any time they appear.
Cocus hesperidus, or mealy bug, has appeared in the Hot-houses about Philadelphia within these few years, and, if not instantly destroyed, increases rapidly. It is of a white dusty colour, when broken, of a brownish red, generally covered with down, under which it deposits its eggs; and they, in a few months, come forth in great numbers. The cocus generally is of a dormant nature, but, in warm weather, they may be seen moving rapidly up the stems of the plants. Fumigating has no observable effect on these insects; therefore, as soon as they appear, recourse must be had to other means. The liquid made from the following receipt, is death to any of the Cocus tribe: Take two pounds of strong soap, one pound flour of sulphur, one pound of leaf tobacco, one and a half ounce of nux vomica, with a table spoonful of turpentine, which boil in four gallons of river water to three; then set aside to cool. When boiling, stir it well with a stick, continuing to do so until it is reduced as above. In this liquor immerse the whole plant, drawing it to and fro gently, that the liquor may penetrate every where.
This done, lay the plant on its side, until it begin to dry, then syringe well with clean water, and put it in its respective station. Where a collection of plants is free from any insects of the kind, every plant that is introduced, ought to be minutely scrutinized, that the unclean may be kept from the clean: the above insect will feed almost on any plant, but indulges on Crássulas, any of the bristly Cáctus, Gardènias, and in fact whatever is in the way.
Cocus————, or brown scaly insect, is frequently found on many plants, but we never could perceive that it does any other material injury, than dirtying them. We have always observed, that it is found in winter to abound most in those situations which are most excluded from air; therefore is of less importance than the other species, which eat and corrode the leaves of tender plants. A washing with strong soap suds will destroy them, or the above liquid will do it more effectually. Tie a piece of sponge on the end of a small stick, and scrub every leaf, stem, and crevice. Fumigating destroys the larvæ of this species.
Cocus————, or small white scaly insect, which generally infests Cycas revolùta and circinàlis, the varieties of Nèrium oleánder, Oleas, and several species of Acacias, may be destroyed by washing as above with a sponge, and a strong decoction of tobacco, using the liquid about the warmth of 100°. Being thus heated, it irritates the insect, when, by easing itself from its bed, the fluid passes under it, and causes immediate death. If it is not thus irritated, it adheres so closely to the foliage, that it will keep you at defiance. The under, or dark side of the leaves is its residence; and we have observed a plant in a house where there was only light on one side, with the dark side literally covered, while the light side was clean. So much for having houses with plenty of light. The effects of this insect are of a corroding nature, extracting all the juices from the leaf under it, even straining to the other side; and where they have got to the extremity, the foliage is completely yellow, and of a decayed appearance.
Cocus————, or turtle insect. We have never observed this insect arrive to any extent, but think that the Datura arborea is most infested with it. It is the largest of any genus known amongst us, and very like a turtle in miniature. On lifting it from the wood, to which it generally adheres, there appear to be hundreds of eggs under it, but fumigating completely destroys the larvæ. In our opinion this turtle insect is no other than the old female of the brown scaly insect, which swells to a large size before depositing its eggs. We have frequently observed the insect dead in this enlarged state, and question if this is the last stage of its transmigration. The male insect is winged, and very active in its movements.
At this period of the season very little is required to grow Calceolàrias to perfection. They require a few months of the Hot-house, and if the directions given last month were followed up, some of these will have advanced a little in growth. The herbaceous kinds, when grown about one inch high, ought to be divided, and put into four inch pots, sprinkled gently, and kept in the shade until they begin to grow; after which, keep them near the glass, to prevent them from becoming spindly and drawn. Their farther treatment will be observed as they require. This is a beautiful genus of plants, flowering very profusely all summer, and some of them early in spring.
Alstrœmèrias, about the beginning or middle of the month, will have made their appearance above ground. When shot about one inch, turn them out, and carefully shake them clear of earth; and if required, divide the crowns, and put them in as small pots as possible, taking care not to break any of the strong fleshy roots. (For Soil, see Table.) To flower these plants well, they require to be frequently shifted, during their active stage of growth, which must be duly observed. The most of the species of this genus will more than repay the attention, by their abundantly and beautifully spotted flowers. A. flósmartìna, A. Pelegrìna, A. pulchélla, and A. atrópurpurea, are the most splendid. The former flowers very freely. All natives of South America.
Where bulbous roots, such as Hyacinths, Jonquils, Narcissus, Ixias, Lachenàllas, &c. are required to be early in flower, they may, about the beginning or end of the month, be put in the front of the Hot-house, giving very little water until they begin to grow; then water freely, and tie up the flower stems as they advance.
This subject ought to be kept constantly in view. However correct every thing may be executed, without that adorning beauty, cleanliness, all will appear only half done. Therefore let all the dead leaves be picked off every day, and with dust and other litter swept out of the house, and when necessary, the house washed, which will be at least once a week. That the foliage of the plants may always appear fresh, syringe them in the evening, twice or three times per week; (when the weather is very cold, do it in the morning.) At present this will in a great measure keep down the insects, and will prove a bane to the red spider.
A hand engine is certainly the best. Milne's patent hand engine surpasses any that we have used. Nevertheless a hand syringe is very effectual. Some of these engines are powerful, throwing the water above forty feet. Read's patent of London is excellent. At the store of D. & C. Landreth, Phila., there is a very good kind, which answers admirably in small houses. Tie up neatly with stakes, and threads of Russia mat, all the straggling growing plants; let the stakes be proportionate to the plants, and never longer, except they are climbing sorts. Do not tie the branches in bundles, but singly and neatly, imitating nature as much as possible. If any of the plants are affected with the Cocus insect, let them be cleaned according to the plan already mentioned, taking particular care also in washing the stakes to which they had been previously tied, and burning all the old tyings, which contain the larvæ of the insect in many instances, especially of Cocus hesperidus. It is premised, when any of these things are done, that they will be well done, and not half doing, and always doing. Cleanliness, in every respect, promotes a pure air, which is congenial to vegetation, and will, with other attention, always ensure a healthful and vigorous appearance in the house.
This compartment requires particular attention, in order to preserve the plants in good health, and carry them through this precarious season of the year. A little air must be admitted at all convenient times. An hour or two at mid-day will be of the utmost importance in drying up damp, and clearing off stagnated air, which is a harbour for every corruption. The top sashes being let down, or turned a few inches, in mild days (that is, when it is not high and cutting winds) from ten or eleven o'clock to two or three, according to the intensity of the frost, will renovate the interior air of the house, and harden the plants. When the weather will permit, let the front sashes be opened about one inch or more. An assiduous, experienced hand will never omit an opportunity.
With regard to fire heat, the temperature must be regulated to suit the nature of the plants in a general sense; so let the mercury, or spirits of wine, of Fahrenheit's thermometer, be from 34° to 43°; if it begins to fall, give a little fire heat. No doubt we have seen the thermometer much lower in the Green-house, than the above, even as low as 24°, without any immediate injury; but it was in an extensive collection, where the most hardy of the plants were selected into one house. Many boast how little fire they give their Green-house, and how cold it is kept, not observing the miserable state of their plants,—inexperience causing them to think, that the least fire heat will make them grow, and would rather look on naked stems than healthy plants. The above temperature will not, in exotics, cause premature vegetation, but will cause the plants to retain the foliage requisite to vegetative nature. A high temperature is not necessary for the generality of Green-house plants; on the contrary, it might very much injure them.
In this month very little is requisite, and must be given with great caution. Few plants will require much, and some hardly any; but all must be attended to, and have their wants supplied. Some will need it twice, some once a week, and some in two weeks, according to their shrubby and woody nature. Herbaceous and deciduous plants will seldom need water. Perhaps, from the throwing of the foliage, to the commencement of vegetation, three or four times will be sufficient. Particular attention should be paid to the state of health and of growth, in which the plants respectively are, in the application of water; otherwise much mischief may be done, and many entirely ruined.
Green-house plants, being now in an absolutely inactive state, require little more water than merely to keep the earth about their roots from becoming perfectly dry, by occasionally applying a very small quantity at the root; and, if done with a watering pot, as described under this head in the Hot-house of this month, very little will be spilt in the house to increase dampness, which, if it does appear, by any of the leaves of the plants becoming musty, they must be instantly picked off; and, if it increases, give a little fire and air. Succulent plants will not need any water during this month, unless omitted in December.
This magnificent and attractive flower, with all its splendid varieties, will, about this time, begin to open its beautiful flowers. But for this admired genus of plants, our Green-houses, at this season, would be void of allurement. It is, in this country, subject to mildew and red spider, and more especially in the city, which appears to be from the nature of the air. The effects of mildew on these plants, if not prevented, would prove fatal; as, from appearance, many have died by it in our city. If it has reached a great extent, the leaves are brownish, having the appearance of being decayed, or scorched with the sun. In taking hold of the leaf, it feels soft, and altogether seems to have lost its nutritive substance; and, when the young foliage expands, it becomes covered with dark brown spots, and finally very much disfigured; and, when in this state, it is attacked by red spider, and, ultimately, death ensues.
If any of the plants are affected as above described, take a sponge, and wash every leaf minutely with soft water, and syringe them with water three or four times a week, which will clean them. All the young foliage will be healthy, and that which has been affected will fall off. However, prevention is better than cure; and if the Camellias are properly syringed every evening during summer, and once or twice a week during winter, they will never be subject to the ravages of mildew or of red spider.
Tie up any of the flowers that are expanded to stakes, in case of accident; and, in syringing, observe not to let any water fall on the flowers, as it causes premature decay, and change of colour.
The mildew first appears like small particles of very fine flour, around the under edge of the leaves, and visible to the naked eye; so that, syringing, sponging, &c. under the leaf is most requisite; but, as the mildew extends, both sides of the leaves are covered with these white particles.
As there will perhaps be more leisure in the Green-house this month than in any other during the winter, it is presumed that there will not be a moment lost. If any of the trees are infested with insects, these, being now in their inactive state, may be more easily destroyed than at any other time. It is the brown scaly insect that generally infests them. For treatment, see Hothouse, January. The plant, or tree, after being washed, before it becomes dry, will require to be syringed with water, otherwise the dust will adhere to the glutinous particles of the soap. Set the plant in an airy situation to dry, in case of damp. There are several others subject to this insect, such as Myrtles, Oleas, Oleanders, &c. which treat in the same manner. Be careful that these trees are not over watered; if the soil is moist, it is sufficient.
If there are any out of the ground, it is time that the whole were potted, such as Lachenàlia, Wachendórfia, Eùcomis, Ixia, Gladìolus, with several others. Keep them in the shade until they begin to grow; then put them on shelves near the light. Those that are growing must be kept in front of the house, to prevent them being weak. Wachendórfia has a beautiful large red tuber root; and, as the new root descends, give it a pot about six or seven inches.
All these roots must be carefully examined. In case slugs or snails are preying upon the embryo of the flower, some of those that are farthest advanced, may be put for a few weeks in the Hot-house. It will greatly accelerate their flowering, but they must be brought out again before the florets expand, and carefully tied up, leaving room for the increase and extension of the flower stem. Give them plenty of water, and if saucers can be placed under them to retain it, it will be of advantage. Change the water every week on those that are in glasses, and keep all the growing bulbs near the light. Narcissus, Jonquils, &c. may be similarly treated.
If the covering of the beds of choice bulbs, herbaceous plants, or tender shrubs, has been neglected last month, let it be done forthwith. The season is now precarious, and delays are dangerous. For particular directions, see December. Any bulbous roots that have been kept out of the ground, should be planted immediately, according to directions in October. Some writers have recommended keeping some of the bulbs until this month, in order to have a continued succession. Experience will prove the inefficacy of the plan, and will satisfactorily show that the difference is almost imperceptible, while the flowers are very inferior and much degenerated; and in place of having "a long continued succession of bloom," there appear, along with your finest specimens, very imperfect flowers, calculated to discourage the admirers of these "gaudy" decoratives of our flower gardens. Whereas every art employed should be to the advancement and perfection of nature.
The plants and roots that are in frames, should be protected with straw mats, and the frame surrounded with litter, or leaves, or what is more advisable, banked with earth—the former being a harbour for mice and other vermin. For full directions, see December. Under this head the plants, such as Auriculas, Polyanthus, Daisies, Carnations, Pinks, Gentianellas, Campanula pyramidalis, Double rocket, Double stock, or Stockgillys, Double Wall-flower, Anemone, Ranunculus, &c. as previously enumerated as frame plants, will require very little water, and be sure to give none while they are in a frozen state. If snow should cover them, the plants will keep in a fine state under it, so never remove snow from covering cold frames, even suppose it should lay for months,—nature will operate here herself.
All the above plants except Anemone and Ranunculus are kept in perfection in the Green-house; but where neither this nor framing can be obtained, they will, in most winters, keep tolerably, if well covered with litter—the roughest from the stable, straw or hay, or such like, using means to secure it from being blown over the whole garden.
It is not advisable to carry on a general pruning in this month, in whatever state the weather may be. The severest frosts generally are yet to come, and too frequently in this operation, what is done now has to be repeated on the opening of spring, causing at that time work to a disadvantage; because, if pruning, when done just now, is accomplished judiciously, whatever more on the same bush is requisite to be done in spring, from the effects of frost, will be injudicious. Hence it is far preferable to delay it until the frost is over, when all can be done to advantage.
There are, undoubtedly, some shrubs that may be pruned any time, from the end of November to the first of March, such as Hibíscus syrìacus (Althea), and all its varieties, except the Double White, which is in some instances entirely killed by our severe winter, and certainly, for precaution, would be the better of some simple protection.
In many seasons, the beginning of this month is open, and admits of the operation of digging, which if it is not all done as advised last month, ought not to be delayed. The fruits of it will appear in the mellowed state of your soil in spring.
If there is any spare time, straight sticks or stakes may be prepared for summer. Tie them up in neat bundles, which will be of great service during the hurried period of the year. An opportunity of this kind should always be laid hold of; the beneficial results will in season be displayed.
Plants that are kept in rooms generally are such as require a medium temperature, say 40°. Sitting rooms or parlours, about this season, are, for the most part, heated from 55° to 65°, and very seldom has the air any admittance into these apartments, thus keeping the temperature from 15° to 25° higher than the nature of the plants requires, and excluding that fresh air which is requisite to support a forced vegetative principle. Therefore, as far as practicable, let the plants be kept in a room adjoining to one where there is fire heat, and the intervening door can be opened when desirable. They will admit sometimes of being as low as 33°.
If they be constantly kept where there is fire, let the window be opened some inches; two or three time a day, for a few minutes, thereby making the air of the apartment more congenial, both for animal and vegetable nature.
There are very few plants killed for want of water, during winter. All that is necessary is merely to keep the soil in a moist state, that is, do not let it get so dry that you can divide the particles of earth, nor so wet that they could be beat to clay. The frequency of watering can be best regulated by the person doing it, as it depends entirely upon the size of the pot or jar in proportion to the plant, whether it is too little or too large, and the situation it stands in, whether moist or arid. Never allow any quantity of water to stand in the flats or saucers. This is too frequently practised with plants in general. Such as Cálla Æthiòpica, or African Lily, will do well, as water is its element, (like Sagittària in this country;) and the Hydrángea horténsis, when in a growing state, will do admirably under such treatment. Many plants may do well for some time, but it being so contrary to their nature, causes premature decay; a fœtid stagnation takes place at the root, the foliage becomes yellow, and the plant stunted; and in the winter season, death will ensue.
In rooms the buds of Camellias will be well swelled, and on the Double White and Double Variegated sorts, perhaps they will be full blown. While in that state the temperature should not be below 34°; if lower they will not expand so well, and the expanded petals will soon become yellow and decay. If they are where there is fire heat, they must have plenty of air admitted to them every favourable opportunity, or the consequence will be, that all the buds will turn dark brown, and fall off. It is generally the case, in the treatment of these beautiful plants in rooms, that through too much intended care they are entirely destroyed. In the city, they do not agree with confined air, and they cannot get too much of pure air, if they are kept from frost or cutting winds. To sponge frequently will greatly promote the health of the plants, and add to the beauty of their foliage, as it prevents the attacks of mildew. In this season they do not require much water at root, which may be observed in the slight absorption by the soil. See this subject under the head of Watering.
When the flowers are expanded, and droop, tie them up neatly, so that the flower may be shown to every advantage.
Insects of various kinds will be appearing on your plants. For method of destruction see Hot-house, January. It will not be agreeable to fumigate the room or rooms, or even to have the smell of tobacco near the house from this cause.
Many ingredients have been compounded, and prescriptions recommended, for the destruction of these nefarious pests. Many of them are altogether ineffectual. Of receipts specified in works of this kind, not a few of them (though eagerly sought for) by men of extensive practice, have been rejected. We shall give the most simple, and in part effective receipt for the destruction of the Green fly.
Take a large tub of soft water, (if the day is frosty, it had better be done in the house,) invert the plant, holding the hand, or tying a piece of cloth, or any thing of the kind, over the soil in the pot, put all the branches in the water, keeping the pot in the hand, drawing it to and fro a few times; take it out, and shake it. If any insects remain, take a small fine brush, and brush them off, giving another dip, which will clean them for the present. As soon as they appear again, repeat the process—for nothing that we have found out, or heard of, can totally extirpate them.
If you have retained any of the Cape bulbs from the last planting, let them be put in, in the early part of the month. For method, see September. Those that are growing must be kept very near the light, that is, close to the window, or they will not flourish to your satisfaction. The fall-flowering oxalis may be kept on the stage, or any other place, to give room to those that are to flower.
Hyacinths, Jonquils, Narcissus, Tulips, &c. will keep very well in a room where fire heat is constantly kept, providing that they are close to the window. A succession of these, as before observed, may beautify the drawing room from February to April, by having a reserved stock, in a cold situation, and taking a few of them every week into the warmest apartment.
Wherever any of the bulbs are growing, and in the interior of the room, remove them close to the light, observing to turn the pots or glasses frequently to prevent them from growing to one side, and giving them support as soon as the stems droop, or the head becomes pendant. The saucers under the Hyacinth and Narcissus especially may stand with water, and observe to change the water in the glasses, as already mentioned.
Every one that has any taste or refinement in their floral undertakings, will delight in seeing the plants in perfection; to have them so, they must be divested of every leaf that has the appearance of decaying—let this always be attended to.
In the early part of this month the weather generally is very cold and changeable in the middle states, and strict attention, with the greatest caution, will require to be paid to the management of the Hot-house. Most of the tropical plants commence an active state of vegetation; and if checked by temperature or otherwise, they will not recover until midsummer. The thermometer may be kept two or three degrees higher with fire heat than last month; the sun will be more powerful, and this will, in a great degree, increase the vigour of the plants. Air may be admitted when the thermometer rises to 75° or 80°, not allowing it to rise higher than the latter. In giving air, let it be done by the top sashes. It is improper to give it in any way to cause a current, for the external air is very cold, although the sun is more powerful. An inch or two on a few of the sashes, as has been previously observed, will be effectual in keeping the temperature low enough, except the weather is very mild.
With regard to firing, what was said last month may suffice for this. Always recollect that it is preferable to keep out the cold than to put it out. It will frequently happen in the time of intense frost, that the weather is dull. In such cases fire in a small degree is requisite all day.
Heavy snows ought never to be allowed to remain on the shutters while they are on the house. If the snow lies on the sashes one day, the internal heat will dissolve some of it; night coming on will freeze it to the wood work, when it will become a solid mass, and too frequently cannot be separated without much damage. If allowed to remain on for two days, the plants are very much weakened, and the foliage discoloured. Therefore let the snow be cleared off instantly, that no inconvenience may take place.
It will be observed that plants absorb more water this month than last. The quantity given will require to be increased, according to the increase of vegetation and the advancement of the season; but never give it until the soil begins to get dry, and then in such proportion as will reach the bottom of the pot. After the sun has got on the house in the morning is the best time to water, observing all the directions given in January.
Perhaps sufficient observations were given under this head last month; but the importance of keeping these disagreeable visitors out of the house, constrains us to make a few more remarks, and perhaps it may be necessary every month. Man cannot be too frequently guarded against his foes, more especially when they are summoning all their forces, and no profession has more than that of the Horticulturist. Let a strict examination be made about the end of the month for the Red spider; they will be in operation some weeks before their depredations are observed on the foliage. The under side of the leaf is their resort in the first instance, and on such plants as have been already mentioned.
Observe daily the young shoots, in case the Green fly becomes numerous. They give the foliage a very disagreeable appearance, and with most people it is intolerable, before their career is arrested. It also takes a stronger fumigation, which has frequently to be repeated the following day to the same degree, much to the injury of many of the plants, and adding to the disagreeableness of the continued vapour in the house.
The Calceolàrias that were put in small pots about the beginning or middle of last month, will, if they have done well, require, about the end of this, to be put in pots a size larger.
If any of Lilìum longiflòrum, Speciòsum, or Japónicum, are wanted to flower early, and were put in the Hot-house in December, without dividing, those that are to flower will have pushed their flower stems, and can be separated from those that will not flower, and put singly into pots; the two former into five or six inch pots, while the latter require six or seven inch pots. Of those that do not flower, three or four can be put into one pot.
About the end of the month, some of the plants of Eurcúma, Amómum, Kæmpféria, Glóbba, Phrynium, Cánna, Zíngiber, Hedychium, and others that are on the dry shelf, will be offering to grow. Let them be taken out of their pots, some of their weakest shoots or tubers taken off, and the strong ones repotted: give gentle waterings until they grow freely, then give an abundance.
Dionæa mucípula, or Venus fly trap, grows best in the Hot-house, and will, about the end of the month, stand in need of being repotted. This plant is very seldom grown in any degree of perfection, having been always considered a delicate plant in collections. The operator has never had courage to treat it according to its nature in a cultivated state. If it is taken out of the pot, just when beginning to grow afresh, and divested of all the soil, leaving only a few of the young roots, (it is a bulb, and will receive no injury by so doing,) put it in new soil; when potted, place the pot in a saucer with one inch of water in it, giving always a fresh supply, when necessary. A shady and moist situation is best adapted to it; this being repeated every year, it will grow, flower, and seed in perfection.
Gesnérias, if in small pots, give larger as they advance in growth. This genus requires to be well attended to make them flower well. G. bulbósa ought to have a situation in every Hot-house. It is remarkable for its many brilliant crimson flowers, and continues in flower for a length of time. When the bulb begins to push, shake it out of the earth, putting it into a small pot; and, as soon as the roots reach the side of the earth, which will be in about one month, put it in a larger pot, and continue to do so until flowering, which will be about the first of June, observing always to keep the ball of earth entire.
Gloriósas must be repotted in the beginning of this month. Etymologists have said that this genus is named from the glorious appearance of its flowers. G. supérba is the most beautiful and curious. The roots ought to be planted one and a half inch deep, taking care not to break them; if there is a bark bed, place the pots in it. Do not water much until they begin to grow. Where there is no bark bed, put the pots into others three inches larger, filling all round with sand, and place them in the warmest part of the house. Keep the sand moist, which will assist to keep the soil in a moist state. The earth must not have much water. As the plants grow, they will require a more liberal supply; yet it is necessary, at all times, to be moderate in giving it. If well treated, the superb flowers will appear in June or July.