These beautiful and highly interesting plants are, to a great degree, neglected in our collections. It cannot be from want of beauty or fragrance that they have not attracted our attention, for they are exquisite in both. We are rather inclined to think that those who have them do not give them the treatment they require yearly to perfect their bloom. They should now have the surface earth taken off about half an inch down, and fresh soil added, which will cause them to put out fresh fibres about the upper part of the roots, and greatly increase their growth. The frame in which they are placed should now face the east, as the sun will be too strong for them; and about the end of the month turn it to the north. The glass of the frame may be white-washed, which will partially shade them from the sun, that being their delight. Give them water sparingly until they begin to grow, and never water them over the foliage previous to flowering, as water injures that fine mealy-like substance found on many of the sorts, and which so greatly improves their beauty. Defend them, therefore, from rain and high winds. To have them flower strongly, only one flower stem should be allowed to grow. The first one that shows is generally the best. At all events leave the strongest, and cut off all the others, or only nip off the flower pips, which answers the same end. Never keep the sash off during night, lest it should rain before morning.
RANUNCULUS AND ANEMONE.
The frames must have plenty of air, and give frequent sprinklings of water. The sashes or boards should be taken entirely off every mild day, and in fine nights leave them exposed to the dew; stir up the earth amongst them, breaking it fine, making all neat. They require liberal supplies of water after they begin to grow.
ROSES.
This is the most favourable month for planting all kinds of garden roses, which must be done as soon as the weather opens, and the ground in a proper state. The earlier in the month they flower the more perfect they will be. Never delay planting when there is an opportunity; for if delayed until the leaves are expanding, the bloom will be much weakened, and the probability is there will be no flowers, and the plants meet with a premature death. It has been said, "there is a particular advantage in planting some every ten days, even to the middle of May; for the flowering of them may be retarded in this way, and the bloom of these delightful shrubs continue for a much longer period." One moment's reflection will convince us, that nature, while in her own element, will not be retarded, suppose there was no danger of instantaneous death to the plants. The artificial means that might be judiciously adopted, with which we are acquainted, to keep back the blooming of hardy plants, is to lift them as soon in spring as is practicable, put them in boxes of earth, and then place them in the driest part of an icehouse until the desired time of planting, which may be delayed as long as the required time of flowering. This will be found a true method of retarding the flowering of roses especially, and not going counter to the rules and principles of nature. There are many beautiful varieties of the garden rose in cultivation, the names of the finest of which we will give in the Catalogue, but perhaps it may be proper to mention here a few of the most particular sorts. The finest unquestionably when in bloom, is the Moss and its varieties, but the flowering is of so limited duration, that it is in a great degree surpassed by others. There is said to be a striped variety of the Moss Rose, but we do not credit it. The Blush Moss, Clinton White Moss, and Mottled Moss, at present certainly are the most superb of that kind. Lee's Crimson Perpetual is a magnificent rose, and flowers in profusion from June to October. This is considered, and justly too, the finest of all the garden roses; its fragrance is exquisite, and the plant highly valued. There is a striped Unique Rose, and a Rosa tricolor, which are much thought of. We have mentioned these as the finest we have seen, but amongst two thousand cultivated varieties of the garden rose, there must be many of equal beauty. Of Rósa spinosíssima there are above three hundred varieties; R. gàllica; two hundred; R. centifòlia, one hundred and fifty; R. damascène, above one hundred; R. álba, fifty; R. rubiginósa, thirty; and of various sorts above eleven hundred. In several individual collections of Europe, there are cultivated above fifteen hundred species, sub-species, and varieties.
When planted, they are too frequently crowded indiscriminately amongst other shrubs, which prevents them having the effect they would have if planted singly or grouped. They vary in size in different sorts from one to ten feet. When planted in the latter method, they should be assimilated in size of leaves and manner of growth, with the greatest variation of flower; or if planted in many small patches, giving each a distinct colour, which has a picturesque effect. An other desirable and fanciful method, is to plant them in figures, giving them edgings of wire, willow, or any other substitute, in imitation of basket work, which is called "baskets of roses;" the ground enclosed in the basket margin to be made convex, which will present a greater surface to the eye; the strong shoots to be layered, or kept down by pegs into the ground, having the points of the shoots only to appear above the soil, which should be covered with moss. With this treatment, in a few years the whole surface of the basket will be covered with rose buds and leaves, of one or various sorts. If two or three of the larger growing sorts are taken, such as Moss or Provins, they may be trained so as to cover a surface of several square yards. One of these covered with Lee's Crimson Perpetual Rose, would be one of the greatest ornaments of the Flower-garden.
A modern invention in the cultivation of the rose is, to grow them in shape of trees, by budding on strong growing kinds at different heights from the ground, according to taste, and the purposes intended. They will form in a few years handsome round heads, which will flower more freely than by layers, or trained on their own stalk. They are particularly desirable amongst low shrubs. When planted, they should be well supported by strong rods, to prevent the wind from destroying them. If any of the roots have been bruised in lifting, cut off the bruised part with the knife, and likewise shorten the young shoots; breaking the earth well about their roots when planting. This has been an esteemed shrub among all civilized nations. The flowers are double, semi-double, and single; the colours are pink, red, purple, white, yellow, and striped, with almost every shade and mixture; the odour universally grateful. This plant is cultivated in every garden, from the humblest cottager to the loftiest prince, and by commercial gardeners in Europe extensively, for distilling rose water, and making the essential oil of roses. They delight in a rich loamy soil, and require plenty of moisture while in a growing state. Those sorts which throw up numerous suckers should be lifted every three or four years, reduced, and then transplanted. When thus removing them, avoid as much as possible exposing their roots; and when newly planted, mulching is of considerable advantage; that is, putting half rotten stable-manure on the surface of the ground round their roots, which prevents evaporation, and keeps up a constant moisture. If this was done in general to our roses in dry seasons, it would greatly improve their flowering. For China roses see next month.