February 28, 1887. ] 



JOUBNAL OF HOBTICDLTOBE AND COTTAGE GABDBNEB. 



157 



WEEKLY CALENDAR. 



FEBRUARY 28— MARCH 6, 1867. 



Meeting of Zoological Society, 8.30 



[P.M. 



Eoyal Hort. Soc, Promenade, 3 p. m, 

 Shrove Sunday. [7 p.m. 



MeetiDR of Entomological Society, 

 Royal Horticultural Society's Meet- 

 Lent begins. Ash Wed. [ings. 



From observations taken near London dnring the last forty years, the average day temperature of the week is 49.1°; and its night 

 temperature 82.9°. The greatest heat was 70", on the 4tb, 1360 ; and the lowest cold 14^ on the 3rd, 1862. The greatest fall of rain was 

 0.81 inch. 



CULTURE OP ROSES IN POTS IN 

 GREENHOUSES. 



HE best Roses for greenhouse 

 culture are the finer varie- 

 ties of the China and Tea- 

 scented, the latter, espe- 

 cially, on account of their 

 peculiar and delightful fra- 

 grance ; but the Bourbons and Hybrid Perpetuals must be 

 included. The following varieties I have found good : — 



China. — Madame Breon, Mrs. Bosanquet, Triomphe de 

 Gand, Prince Charles, Henri Cinq, La Seduisante, Infidelites 

 de Lisette, Louis Philippe, Napoleon, Clara Sylvain (gene- 

 rally classed with the Tea- scented), and Fabvier. 



Tea-scented. — Goubault, Homere, Devoniensis, Abricote, 

 Buret, Adam, BariUet-Deschamps, Comte de Paris, EHse 

 Sauvage, Caroline, Le Cameleon, Lays, Madame Bravy, 

 Madame Maurin, Madame J. Halphen, Safrano, Victoire, 

 Souvenir dun Ami, Niphetos, Madame William, Marechal 

 Niel, and the finest scented of all Teas, the original of this 

 family, Rosa indica odorata. 



Bourbons. — • Souvenir de Malmaison, Baron Gonella, 

 Acidalie, Queen of the Bourbons, Emotion, Marquis de 

 Baltiano, Reveil, Vorace, Sonchet, Rev. H. Dombrain, 

 Louise MargottLn, and Catherine Guillot. 



The Hyhrid Perpetual^, not to be overlooked, are Lord 

 Macaulay, Lord Clyde, John Hopper, Lord Palmerston, 

 Due de Gazes, Due de Rohan, Francois Lacharme, Gloire 

 de Santenay, Charles Lefebvre. Caroline de Sansal, Ma- 

 dame Furtado, Duchesse de Morny, Madame Alfred de 

 Rougemont, Madame Boutin, Louise Magnan, Louis XIV., 

 Senateur Vaisse, Pierre Netting, Monte Christo, Virginale, 

 "William Griffiths, Comte de Nanteuil, Marechal Vaillant, 

 Madame Vidot, Baronne Pelletan de KinkeUn, Alfi-ed de 

 Rougemont, and Prince Leon. 



All the above are good Roses, and, for greenhouse cul- 

 ture, should be on their own roots. Most, if not all, of the 

 kinds named are kept in stock by our principal nursery- 

 men in 24's or six-inch pots, of a size fit for thi.s mode of 

 culture, the cultivator being thereby saved a year in the 

 preparation of the plants. Those, however, who wish to 

 prepare their own plants should procure them in spring, 

 not later than May, and if in small pots, as they usually 

 are, they may be at once placed in pots (i inches in dia- 

 meter, in a compost of loam and leaf mould in equal parts, 

 with a free admixtm-e of sharp sand amounting to about 

 one-sixth of the whole. The pots should be drained to one- 

 third their depth with crocks, and in potting the ball should 

 be gently pressed to loosen it, wliich is desirable. 



After potting, the yilants should have a good watering, 

 and be set on slates or a hard bottom in an open, wiurm, 

 sunoy situation. The intervals between the pots should be 



Me. 309.— Vol. XII., New Series. 



filled with ashes ; in other words, the pots should be plunged 

 to the rim. The plants should be frequently syringed, 

 especially in the evenings of hot days, and weU watered at 

 the root, taking care not to saturate the soil or make it 

 sour through repeated waterings when it is already wet, 

 and dryness must be equally guarded against, extremes of 

 either being injurious. All flower-buds as they show are 

 to be pinched off between the nails of the finger and thumb, 

 and any strong shoot stopped at the eighth leaf. The pots 

 should be occasionally lifted to see that the roots are not 

 coming tlirough, and if they are rub them off before they 

 make any great progress. 



Towards November tlie pots should be lifted and plunged 

 in coal ashes in a cold pit or frame ; the watering, being 

 discontinued after September, is not to be renewed on the 

 removal of the plants to the pit, but they are to be kept 

 dry, and to have air whenever the external atmosphere is 

 mild, also protection from rain and frost. Wliere the frame 

 or pit accommodation is limited the Perpetuals and Bour- 

 bons may remain out of doors in a sheltered sunny situation, 

 affording them the protection of a mat or other covering 

 during very severe frost. Tea-scented and China Roses, 

 however, must eitlier have the protection of a frame or be 

 placed at once in the greenhouse, which is anything but 

 desirable, as the space wliich they there fill can be much 

 better occupied with Chrysanthemums and other plants. 

 Should there be a light and airy cool house it would be 

 well to place them all in it, and if the weather prove severe 

 a little hay should be packed round the pots, and may be 

 spread over the shoots, taking care to remove it after the 

 severe weather. 



Early in February the plants may be taken into the 

 greenhouse, the pots having been previously washed clean, 

 and the drainage made good if defective, as no plant will 

 thrive in a badly-drained soil. The surface of tiie soil in 

 the pots should also be stirred, and if green, replaced with 

 fresh. The plants may then be pruned. The pruning of 

 the China and Tea-scented kinds should consist in mode- 

 rately cutting out the very weak shoots, and doing little more 

 than shortening those of moderate growth, so as to form 

 a compact bush. The Bourbons and Perpetuals should ))e 

 cut in — the very strong shoots to four, the strong to three, 

 and the moderately strong to two eyes, and the weak cut 

 clean out, imless a shoot be wanted in a particular place, 

 when a weak shoot may be cut back to one eye. If tall 

 plants are wanted, any of the Tea-scented or China varie- 

 ties that have made good growths may have a neat stick 

 or stake placed in the centre of the pot, and the strongest 

 of the shoots tied to it, the others being shortened to diffe- 

 rent heights, that tied to the stake to have merely its end 

 taken off. The plants must be placed as near the glass as 

 their growth allows, and between it and them no creepers 

 or other plants must be tolerated. They cannot have too 

 much light, it is easy to shade them when in bloom, and 

 the position should be aii-y. The temperature need not be 

 altered to suit them, as that of a greenhouse is admirably 

 adapted to thefr requirements. Due regard must be paid to 

 watering them, avoiiling extremes either way, and yet it is 

 as well to let the soil become rather dry, and tlien afford a 

 No. 961.— Vol. XXSvn., Old Semes. 



