Any of the Myrtles, Oranges, Lemons, Oleanders, &c. that were headed down in April or May, will be pushing many young shoots. The plant must be carefully examined, to observe which of the shoots ought to be left to form the tree. Having determined on this, cut out all the others close to the stem with a small sharp knife; and if the remaining shoots are above one foot long, pinch off the tops to make them branch out.

The trees that were entirely headed down, should not have above six shoots left, which will, by being topped, make a sufficient quantity to form the bush or tree.

GERANIUMS.

These plants, about the first of the month, require a complete dressing. In the first place collect them all together, and with a sharp knife cut off the wood of this year to within a few eyes of the wood of last year. CitriodÓrum and its varieties do not need pruning. The plants grown from cuttings during the season, that have flowered, cut them to about four inches from the pot. This being done, have the earth all prepared with potshreds or fine gravel for draining the delicate kinds. And in a shaded situation turn the plants progressively out of the pots they are in, reducing the balls of earth so that the same pots may contain them again, and allow from half an inch to two inches, according to the size of the pot, of fresh soil around the ball, which press down by a thin piece of wood cut for the purpose. Finish by leveling all neatly with the hand. Give very gentle waterings from a pot with a rose mouth, for a few weeks, until they have begun to grow, protecting them entirely from the sun, till that period, then take the opportunity of a cloudy day to expose them. After this repotting, the following kinds are liable to suffer from too much water: PavonÍnum, Davey[)a]num, fÚlgens, ardens, citriodÓrum, rubÉscens, florabÙndum, ardÈscens; with those of a similar habit, and these species do not require so much encouragement at the root as the strong growing sorts. The tuberous rooted and deciduous species must be very moderately supplied. Be careful when watering that the new soil does not become saturated with water, as, though allowed to dry again, it will not be so pure. When they shoot afresh, turn them regularly every two weeks, to prevent them growing to one side.

ORANGES, LEMONS, &c.

As it is frequently very inconvenient to shift these trees into larger tubs in the months of March and April, this month is a period that is suitable both from the growth of the trees, and their being in the open air. It would be improper to state the day or the week, that depending entirely on the season. The criterion is easily observed, which is when the first growth is over, these trees making another growth in autumn. When they are large, they require great exertion, and are frequently attended with inconvenience to get them shifted. Where there is a quantity of them, the best plan that we have tried or seen adopted is as follows: Have a strong double and a single block trimmed with a sufficiency of rope; make it fast to the limb of a large tree, or any thing that projects, and will bear the weight, and as high as will admit of the plant being raised a few feet under it. Take a soft bandage and put around the stem, to prevent the bark from being bruised; make a rope fast to it, in which hook the single block. Raise the plant the height of the tub, put a spar across the tub, and strike on the spar with a mallet, which will separate the tub from the ball. Then with a strong pointed stick probe a little of the earth from amongst the roots, observing to cut away any that are affected by dry-rot, damp, or mildew, with any very matted roots. Having all dressed, place a few potshreds over the hole or holes in the bottom of the tub; measure exactly the depth of the ball that remains around the plant, and fill up with earth, pressing it a little with the hand, until it will hold the ball one inch under the edge of the tub. If there is from four to six inches of earth under it, it is quite enough. Fill all around the ball, and press it down with a stick, finishing neatly off with the hand. Observe that the stem of the tree is exactly in the centre. This being done, carry the tree to where it is intended to stand, and give it water with a rose on the pot. The earth will subside about two inches, thus leaving three inches, which will at any time hold enough of water for the tree. Trees thus treated will not require to be shifted again within four or five years, having in the interim got a few rich top-dressings.

Frequently in attempting to take out of the tubs those that are in a sickly state, all the soil falls from their roots, having no fibres attached. When there are any such, after replanting, put them in the Green-house, and shut it almost close up, there give shade to the tree, and frequent sprinklings of water, until it begins to grow, when admit more air gradually until it becomes hardened. These trees should be put in very small tubs, and a little sand added to the soil. Give very moderate supplies of water, merely keeping the soil moist. Tubs generally give way at the bottom when they begin to decay, and in the usual method of coopering after this failure they are useless, the ledging being rotten, and will not admit of another bottom. The staves should be made without any groove, and have four brackets nailed on the inside, having the bottom in a piece by itself that it can be placed on these brackets, and there is no necessity of it being water tight. Then when it fails, it can be replaced again at a trifling expense. A tub made this way will last out three or four bottoms, and is in every respect the cheapest, and should be more wide than deep. Large Myrtles and Oleanders may be treated in the same manner as directed for the above.

OF PRUNING ORANGES, LEMONS, &c.

These trees will grow very irregularly, especially the Lemon, if not frequently dressed or pruned. Any time this month look over them all minutely, and cut away any of the small naked wood where it is too crowded, and cut all young strong straggling shoots to the bounds of the tree, giving it a round regular head. It is sometimes necessary to cut out a small limb, but large amputations should be avoided. Cover all wounds with turpentine or bees-wax, to prevent the bad effects of the air.

OF REPOTTING PLANTS.

Any of the plants enumerated in March under this head, may be now done according to directions therein given, and which apply to all sizes. This is the proper period for repotting the following:—

CÁlla, a genus of four species. None of them in our collections, and in fact are not worth cultivation, except C. ÆthiÒpica, Ethiopian Lily, which is admired for the purity and singularity of its large white flowers, or rather spatha, which is cucullate, leaves sagittate. It is now called RichÁrdia ÆthiÓpica. The roots which are tubers should be entirely divested of the soil they have been grown in, breaking off any small offsets, and potting them wholly in fresh earth. When growing they cannot get too much water. The plant will grow in a pond of water, and withstand our severest winters, provided the roots are kept at the bottom of the water.

Cyclamen. There are eight species and six varieties of this genus, which consists of humble plants with very beautiful flowers. The bulbs are round, flattened, and solid, and are peculiarly adapted for pots and the decorating of rooms. C. cÔum, leaves almost round; flowers light red; in bloom from January to April. C. pÉrsicum, with its four varieties, flower from February to April; colour white, and some white and purple. C. hederÆfÒlium, Ivy-leaved; colour lilac; there is a white variety; flowers from July to September. C. EuropÆum, colour lilac, in bloom from August to October. C. neapolitÀnum, flowers red, in bloom from July to September. These are all desirable plants. When the foliage begins to decay, withhold the accustomed supplies of water, keeping them in a half dry state; and when growing they must not be over watered, as they are apt to rot from moisture. Keep them during the summer months in the shade. The best time for potting either of the sorts is when the crown of the bulb begins to protrude. If the pots are becoming large, every alternate year they may be cleared from the old soil, and put in smaller pots with the crown barely covered. When the flowers fade, the pedicles twist up like a screw, inclosing the germen in the centre, lying close to the ground until the seeds ripen, from which plants can be grown, and will flower the third year.

LachenÀlia, a genus of about forty species of bulbs, all natives of the Cape of Good Hope, and grow remarkably well in our collections. The most common is L. trÍcolor. L. quadrÍcolor, and its varieties, are all fine; the colours yellow, scarlet, orange, and green, very pure and distinct; L. rÙbida. L. punctÀta, L. orchoÍdes, and L. nervÒsa, are all fine species. The flowers are on a stem from a half to one foot high, and much in the character of a hyacinth. The end of the month is about the time of planting. Five inch pots are large enough, and they must get very little water till they begin to grow.

Oxalis, above one hundred species of Cape bulbs, and like all other bulbs of that country, they do exceedingly well in our collections, in which there are only comparatively a few species, not exceeding twelve. O. rubÈlla, branching, of a vermilion colour; O. marginÀta, white; O. elongÀta, striped; and O. amÆna, are those that require potting this month. The first of September is the most proper period for the others.

This genus of plants is so varied in the construction of its roots, that the same treatment will not do for all. The root is commonly bulbous, and these will keep a few weeks or months out of the soil, according to their size. Several are only thick and fleshy: these ought not to be taken out of the pots, but kept in them, while dormant; and about the end of this month give them gentle waterings. When they begin to grow, take the earth from the roots, and pot them in fresh soil. In a few years the bulbs are curiously produced, the original bulb near the surface striking a radical fibre downright from its base, at the extremity of which is produced a new bulb for the next year's plant, the old one perishing.

OrnithÓgalum, Star of Bethlehem, about sixty species of bulbs, principally from the Cape of Good Hope. Many of them have little attraction. The most beautiful that we have seen are O. lactÉum, which has a spike about one foot long of fine white flowers; and O. aÙreum, flowers of a golden colour, in contracted racemose corymbs. These two are magnificent. O. marÍtimum is the officinale squill. The bulb is frequently as large as a human head, pear-shaped, and tunicated like the onion. From the centre of the root arise several shining glaucous leaves a foot long, two inches broad at base, and narrowing to a point. They are green during winter, and decay in the spring; then the flower-stalk comes out, rising two feet, naked half way, and terminated by a pyramidal thyrse of white flowers. The bulb ought to be kept dry from the end of June till now, or it will not flower freely.

GENERAL OBSERVATIONS.

Watering, and other practical care of the plants, to be done as heretofore described. Frequently the weather at the end of this month becomes cool and heavy. Dew falling through the night will in part supply the syringing operation, but it must not be suspended altogether. Three times a week will suffice. Any of the plants that are plunged should be turned every week. In wet weather observe that none are suffering from moisture.