Calceolarias.--Remove all decayed leaves, and be careful to give no more water than is really required. Keep down green fly.

Cinerarias.--No more fire heat to be given than is necessary to keep out frost. The plants intended for large specimens to receive their final shift; air to be given on all occasions in favourable weather. Every one that is getting pot-bound to be shifted. Green fly to be kept down by fumigating. The most forward to have the lightest place in the house, close to the gla.s.s, with sufficient s.p.a.ce for the air to circulate freely around the foliage of each.

Pelargoniums.--To be kept rather cool and dry; fire heat to be avoided, except when necessary to prevent the temperature falling below 40, or to dispel damp. Every plant intended for early bloom to be arranged in the best form. The system of arranging a piece of twisted ba.s.s under the rim of the pot, to which loops are fastened to secure the shoots and the better formation of the plant, obviates the too-extensive use of sticks, a superfluity of which is at all times objectionable.

STOVE AND ORCHID-HOUSE.

Continue to act as advised lately. Care and caution in the application of water are more especially required, as there is not a single feature in the cultivation of plants during the winter in which the amateur is more likely to err, and by reason of which a greater amount of injury is sustained, than in the application of water either in its fluid or vaporous state. If applied to the soil in superabundance, the roots, being inactive, are certain to sustain some degree of injury; and if it is applied in excess to the atmosphere in the form of vapour, the exhalations from the leaves of the plants will be checked in consequence of the density of the medium that surrounds them when they will be sure to suffer.

FORCING-HOUSES.

Cuc.u.mbers.--Sow some good variety for planting out next month. A one-light frame on a well-worked bed of dung and leaves is most suitable for the purpose, as producing an atmosphere moist and congenial for their healthy vegetation and growth.

Peaches.--Syringe the trees that are just started and swelling the buds, and keep every plant clean and neat.

Pines.--When the application of fire heat is necessary during severe weather, it is advisable to pay particular attention to those that have done blooming and swelling off in various stages, that they may not receive a check from being over-dry at the roots.

Vines.--Leaves, or dung, or both mixed together, when used to produce fermentation, and a sweet vaporous atmosphere to "break"

the early Vines, should be turned and watered at least once a-week.

Keep the wood generally moist, and proceed in forcing with caution as before advised. As the most essential point in early forcing is to secure a healthy and vigorous root action, it is advisable, if the Vines are planted inside, to excite the roots by an occasional application of water at a temperature from 85 to 90. It the Vines are planted outside, a steady heat of about 60 should be maintained by the fermenting matter placed on the border to be frequently turned over, and protected with dry litter from the frost or other unfavourable weather. Houses intended to commence forcing the early part of next month, to have some fermenting materials placed on the borders to excite the roots a little before the Vines are started, which will be of some a.s.sistance to make the buds push strongly and without much loss of time. To induce the buds to break regularly throughout the whole length of the Vine, it is frequently necessary to bend the rod so as to incline the most forward buds to the lowest level, and to elevate the most backward.

THIRD WEEK.

GREENHOUSE AND CONSERVATORY.

As many of the hard-wooded plants are impatient of fire heat and a confined atmosphere, it is advisable to use no more artificial heat than is absolutely necessary. The drying effects of fire heat must be counteracted by a supply of moisture; the moisture becomes condensed on the gla.s.s and falls in drips, that are apt to spoil the beauty of the flowers, and to injure the foliage of the plants. The best corrective for such unfavourable results is to be found in keeping the temperature as low as may be consistent with the safety of the plants, and in withholding moisture as much as possible whenever the gla.s.s is affected by frost. See that the young stock of Heliotropes, Scarlet Geraniums, Persian Cyclamens, and other such flowers, that are grown especially for winter, are accommodated with a light, airy situation, and receive regular attention as regards watering. Avoid watering the Pelargoniums until they are thoroughly dry, and keep down insects.

STOVE AND ORCHID-HOUSE.

The plants in the stove should be kept as quiet as possible, and only just sufficient water given to keep them from flagging, to be accompanied with a moderately low temperature; about 60 by day, and 50 by night, the object being to prevent them from growing before the spring of the year. Admit air when it can be done safely, but do not expose the plants to cold, frosty winds at any time. As our collections of Orchids are from countries with different seasons of growth, and various kinds of temperature and climate, it is difficult to cultivate in one house a miscellaneous collection of them so satisfactorily as where there are two divisions, the one commanding a higher temperature, with more moisture, than the other.

Where there is no such division, advantage may be taken of a forcing-pit, or other such house, to which any of them now in a growing state may be removed, and thus their growth may be promoted without injury to the general collection. For the general collection a drier atmosphere and lower temperature are now desirable, as no plants are more benefited by a season of rest than Orchids.

FORCING-HOUSES.

All Vines, Peaches, and Figs in Pots, or Tubs, to be secured from frost and wet. A fermenting body in a forcing vinery is an excellent plunging medium for such of these as are wanted very early. Keep up a succession of Asparagus, French Beans, Rhubarb, Sea-kale, &c., according to the demand.

Cuc.u.mbers.--Thin out the fruit occasionally, more especially if too many appear at one time. If any plants have been bearing some time, and now appear nearly exhausted, they may be rallied into vigour again by a judicious pruning and thinning, and by the application of a top dressing of leaf mould or other such rich, light soil, and of liquid manure occasionally.

Peaches.--A moist heat, arising from dung or leaves, is as beneficial to Peach trees as to Vines before they break, but as it can but rarely be made use of, in consequence of the difference in the structure of the interior, moisture must be supplied by other means, such as syringing and sprinkling the flues, or pipes, when warm. A few trees, in pots, are useful for early forcing, as they can be easily plunged in a pit or any other convenient place where a mild regular bottom heat can be supplied. The trees for this purpose must have been grown and established for some time in pots.

Pines.--A regular heat, both bottom and atmospheric, to be kept up to carry the general stock of fruiting plants safely through the winter. A high and close temperature to be avoided in the management of the succession plants.

Strawberries.--If ripe fruit is wanted very early, some of the strongest plants, if treated as advised, should now be selected, and placed in a pit where they can get a gentle bottom heat, or on the back or front shelf of a vinery or Peach-house, just started for forcing, to be placed near the gla.s.s with a free admission of air on fine days.

Vines.--It is advisable, when beginning to force, to commence with a low temperature--say, 55 by day and 50 by night, to be increased 5 more until they break, when it may be raised to 60 at night, and 65 in the day, or thereabouts, allowing a rise of a few degrees by sun heat. The Vines to be syringed evening and morning until they break, and the walls and floor kept damp. If the stems of the Vines are near the flues, or pipes, wrap moss over that part, and keep it constantly moist. The Vines in the late houses to be pruned, the loose bark to be removed, and the scale, if visible, to be banished by an application of the Gishurst Compound, or by the more ancient composition of sulphur, soft soap, and tobacco water. Where the fruit is ripe, a little fire heat will be necessary in frosty weather to prevent the vapour that adheres to the gla.s.s on the inside being frozen, for the moisture on thawing is apt to drop upon the bunches causing injury to the bloom, and decay to the berries.

FOURTH WEEK.

GREENHOUSE AND CONSERVATORY.

Continue to keep the supply of heat and moisture at the lowest degree compatible with the safety of the plants from frosts. In damp, foggy weather, a gentle fire to be applied occasionally during the day to expel moist, stagnant air. During severe winterly weather it is advisable to be cautious in the application of heat, more especially at night. From 45 by night to 50 by day will be sufficient for the conservatory, and 40 for the mixed greenhouse.

To give a pleasing variety to the appearance of these houses it is advisable to rearrange the plants occasionally; those going out of flower to be removed, and a fresh supply introduced from the forcing-pit. All plants in these and other departments to be regularly looked over, removing the dead leaves and tying in straggling branches. The surface soil to be stirred a little, and some fresh added. As all compost-heaps are benefited by exposure to frosts, it is advisable to turn over the caked or frozen surface every morning, until the whole is turned over and penetrated by the frost, by which grubs and all such kinds of vermin are destroyed, and the soil considerably ameliorated.

Calceolarias (Herbaceous).--To be shifted into larger pots if they require them, to be kept near the gla.s.s, to be watered moderately through a fine rose, and on no account to be allowed to get thoroughly dry. To be careful when removing decayed leaves, not to pull or to cut them off too close to the stem, by which the flower-shoots would be very likely to get injured.

Camellias.--Great care is necessary that they may not be exposed to great alternations of temperature, which are sure to cause them to drop their flower-buds. The great reason why flower-buds very often fall off without properly coming into bloom, is the too sudden changes in the temperature to which they are exposed. For instance: when the buds are nearly ready to expand, a sudden heat causes them to push too rapidly; and, on the contrary, a decrease of warmth at the time checks their growth, and in other cases causes them to fall. The heat required to expand the blossom-buds is about 60 by day, and 50 by night. If this be attended to, the plants will continue in flower for a great length of time, as the plants in that heat are not excited to grow. A little weak manure water to be given occasionally to the blooming plants.

Chrysanthemums.--When they begin to fade, to be removed to the north side of a wall or fence, the pots to be plunged in old tan, leaves, or sawdust, to protect them from the severity of winter.

Cytisuses.--Place them and other such early-flowering plants in the coldest part of the house, where they may receive plenty of air at all favourable opportunities.

Orange Trees.--These, or other such plants that have not been recently potted, to be surfaced by removing a little of the top soil and supplying its place with fresh. Attention to be paid to keeping the leaves clean and healthy.

STOVE AND ORCHID-HOUSE.

As it would be improper to attempt to maintain the same degree of heat in any structure, when the external temperature is below the freezing-point as may be permitted if it were 10 or 15 above freezing, we would advise from 50 by night to 60 by day, for the stove and Orchid-house. As many plants, especially Orchids, suffer from drip at this season, a careful look-out should be kept, and either the cause remedied or the plants removed. The decoration of the hothouse would now depend in a great measure upon Begonias, Euphorbias, Luculias, &c. Such plants should be carefully tied up and placed in the most conspicuous situations, or some of them may be removed to the conservatory so as to prolong their season of blooming.

Allamandas.--Continue the temperature and treatment as lately advised. To be potted, as also _Stephanotis_, &c., and trained preparatory to starting them into growth, about the beginning of the new year.

Forcing-pit.--Introduce such plants as are generally used for forcing, especially the sweet-scented sorts, Lily of the Valley, Sweet Briar, Lilacs, some of the Tea, Bourbon, or Hybrid Perpetual Roses, and bulbous plants.

Ixoras.--To be elevated near the gla.s.s to set their bloom, and to have plenty of air at favourable opportunities.

FORCING-HOUSES.

Cuc.u.mbers.--No diminution of heat to be allowed after the plants are ridged out and in action.

Peaches.--It is becoming very much the fashion to have Peach and some other sorts of fruit trees which are wanted for early forcing in pots, and the plan is so far good, that it affords the advantage of being able to give the roots a mild, regular bottom heat, which is of the greatest importance in early forcing. Those who have good established trees, in pots, may now start them in a moderate heat.

Air to be given liberally in favourable weather, and the syringe to be used freely over them morning and evening. The surface soil to be stirred up and kept open, and a supply of manure water to be given previous to starting them. The trees in the late houses to receive whatever pruning is necessary, and to be cleansed of every particle of scale, and afterwards washed with a composition of soft soap and sulphur. All bast ties and insect-haunts to be carefully removed.

Pines.--During the continuance of severe weather, dry fern, straw, &c., will be necessary, in addition to mats; such coverings will be of more service than maintaining strong fires to keep up the temperature. When a supply of fruit is required throughout the year, it is sometimes necessary, at this season, to subject some of the plants to a high temperature to start them into fruit. A few of such as are most likely to fruit soon, to be put into a pit, or house, by themselves, where a temperature of from 60 to 65 by night, and from 70 to 75 by day, with about 80 of bottom heat, will be the most certain treatment for starting them into fruit. The other plants can then be supplied with a moderate temperature until the beginning of February; by such treatment a succession of fruit will be prolonged. Do not suffer the linings of dung-beds to decline, keep up, if possible, a temperature of 50 at night, and 60 by day, with a little air at every favourable opportunity.

Potatoes.--Plant some sound, whole sets, singly, in three-and-a-half-inch pots, to be placed at the back of a Pine-pit, or in any other place where there is some heat, they will, in due time, be useful for planting out in the exhausted Asparagus-frames or pits.

Raspberries.--When a few early dishes would be considered a treat, if some canes are taken up and planted in any vacant spot in the Peach-house, they will be found to bear fruit abundantly with common care. It is a more certain method of obtaining fruit than by potting them.

Vines.--When started and until the buds are fairly broken, endeavour to keep the points of the shoots nearly on a level with the lowest part of the Vine, and if that should not be found sufficient to induce the buds to start regularly throughout the whole length of the Vine, the rod should be bent so as to bring the most forward buds to the lowest level, and elevating those that are backward. A moist atmosphere to be kept up by sprinkling the floor and paths, and by syringing the Vines lightly every morning and evening until the leaves begin to appear, when the supply of moisture will not be so much required. Introduce a lot in pots to some house, pit, or frame prepared with leaves or manure, if not done as advised last week. At first, Vines in pots are most useful for early work, as they, in many places, save the established Vines in houses, from the hazardous operation of early excitement.

Increase the temperature slightly when the buds are beginning to swell, or are starting a little. The fermenting material in the house to be stirred up occasionally. This fermenting material should, if possible, consist of a large proportion of leaves mixed with the dung, to prevent the steam from the latter discolouring the rafters and sashes; and if the vapour is likely to be too strong, a thin covering of sawdust or old tan will prevent any injurious effects. If the roots are outside the house, and had been covered before the commencement of frost, as advised, some more dung and leaves should be added to keep up a genial heat in the border, the good effects of which will be soon evident in the progress of the Vines inside. When the Grapes are all cut in the late houses, the Vines to be pruned immediately, and the cuts to be covered with white lead.