To the Editor of the Florist, Sir: As you invite communications from practical gardeners, I offer a few remarks on the above; as I think it a much rarer plant than it ought to be—few plants excel it in simple beauty, and by proper management it may be had in bloom every month in the year. Being double, it can only be propagated by cuttings, which may be taken off at any time, and readily struck in sand under a bell glass. In about three weeks they are sufficiently rooted to pot into single pots. I find them to thrive best in a compost of rough leaf mould and sandy loam, in well drained pots. I repot them as often as they become well rooted; and pinch off every flower stalk that appears till the plant is six months old at least. I then let it flower on, and as each flower truss shows symptoms of withering, pluck it out. By this course it will continue to flower a whole year. They frequently die out from exhaustion at this time, and the only way I find to prevent this, is to divide the plant into off-sets, and so start with them as with new plants. They always do well with me by this treatment. The double white is the commonest and most easy to be procured; but I have observed in a report of the Pennsylvania Society, that the purple exists also in your neighborhood. If you think the above worthy of insertion in the Florist, I should be happy to send you some others when I have leisure. Yours, &c., HORTUS. NOTES ON ROSE CULTURE, BY A LOVER OF ROSES. (Continued.) HYBRID PERPETUAL OR REMONTANT ROSES.—This division of the Rose was introduced to us about 15 or 16 years ago and according to the opinions of good judges it originated between the perpetual Rose Du Roi and the Bourbon Rose; they have been till very recently nearly all of a crimson or dark red color. Florists and Rose-growers generally esteem these the finest of all Roses, to which I would coincide, provided, they were constant monthly bloomers, which they are not, giving only two or perhaps faintly a third bloom with a meagre flower in the autumnal months. They richly deserve special attention for their fine bold flowers, rich foliage, and luxuriant shoots when on their own roots; or if budded they make very admired standard Rose trees. But oh! what nicety of eye, how critical the judgment to detect the difference of one half of them. For my own pleasure and gratification I would not give a groschen for ¾ths of them; but we are so led off our guard by “have you got so and so,” we blush to own up, and buy nearly all, good, bad, and indifferent; but pray who would grow Doctor Marx, Dr. Margolin, Madam Laffay, and nearly 50 others; all red, rosy red, dark red, light crimson, and such transpositions, meaning nearly the same in color and character? So be it. I will not detail before your thousands of readers such equivocal terms, but give off hand and full in my eye, a score that will please the most fastidious.