18 



The Weekly Florists^ Review* 



OCTOBUB 6, 1910. 



CYANIDE ON BOSES. 



•Will you kindly state how much 

 potassium cyanide and sulphuric acid 

 to use for 1,000 cubic feet of air space, 

 to be used in a house of roses f What 

 damage is likely to occur to foliage 

 and flower petals if used too strong f 

 I understand the dangers accompanying 

 this gas^ and its method of applying, 

 for thrips, aphis, etc. Should the 

 earthenware pots or jars be kept, say, 

 three or four feet away from the plants 

 to prevent the fumes from scorching? 



K. J. P. 



The recipe for using cyanide of po- 

 tassium is as follows, for 1,000 cubic 

 feet of air space: 



Water, six ounces. 



Sulphuric acid, four ounces. 



Cyanide of potassium, ninety-eight 

 per cent pure, two ounces. 



The jars should be kept as far as pos- 

 sible from the rose plants, to avoid 

 burning, and the atmosphere, foliage, 

 etc., should be as dry as possible. 



This dose should be repeated every 

 forty-eight hours to exterminate the 

 newly hatched insects, until the house 

 is perfectly free from them. 



Bibes. 



BABY DOBOTHY FOB EASTEB. 



What time should I bring in my 

 Baby Dorothy roses to have them in 

 bloom for Easter f My house is kept 

 at 50 degrees during the night and 60 

 degrees during the day. J. C. E. 



Start the plants about the end of 

 January in an average night tempera- 

 ture of 50 degrees. In this heat they 

 will flower nicely for Easter, which in 

 1911 comes as late as April 16. 



^__ C. W. 



POT BOSES FOB WINTEB. 



Would it pay me to take up a few 

 plants of Gruss an Teplitz and Prince 

 Camille de Rohan now to force for this 

 winter, and could I have them in flower 

 by the first week in January! If so, 

 would you kindly let me know how to 

 proceed with them to get them in flower 

 by that timef J. W. C, 

 • 



Plants, no matter whether grown in 

 pots or dug up and potted, cannot be 

 ripened, rested and forced by the first 

 weeks in January. Gruss an Teplitz is a 

 hybrid tea, which is one of the best 

 perpetual blooming roses we have. On 

 the other hand, Prince Camille de Rohan 

 is a hybrid perpetual. You could lift 



and pot these roses about the last part 

 of October, but it would be inadvisable 

 to start them before the end of the year, 

 which would mean March before they 

 bloomed. With stock grown in pots 

 through the summer, you could advance 

 this date somewhat, but it is no easy 

 matter to flower any of these roses be- 

 fore February. If you want pot roses 

 early in January, it would be better to 

 grow some teas. C. W. 



OUTDOOB BOSES FOB CUTTING. 



Can roses be grown outdoors in sum- 

 mer for cut flowers and be salable, in 

 central Michigan? If so, what would 

 be the best varieties to grow? What 

 size of plants should be used and how 

 far apart should they be? H. H. G. 



In addition to the hybrid perpetual 

 roses, whose flowering season is mostly 

 in June, the hybrid tea roses are well 

 adapted for cutting and are persistent 

 bloomers. Flowers of fine, salable qual- 

 ity are produced on them, if they are 

 given a rather light but rich soil and 

 are mulched' or watered during dry 

 weather. A few desirable varieties for 



cutting, among hybrid teas, are: Caro- 

 line Testout, satiny rose; Killarn#y, 

 bright pink; White Killarney, white, del- 

 icately suffused with pink; Mme. Abel 

 Chatenay, carmine rose, shaded salmon; 

 Kaiserin Augusta Victoria, pearly whit(9; 

 Mme. Ravary, nankeen yellow; Vis- 

 countess Folkestone, creamy pink; Sou- 

 venir du President Carnot, soft rose; 

 Mildred Grant, blush white, shaded 

 pink; Bessie Brown, creamy white; 

 Richmond, crimson scarlet. 



Other perpetual blooming roses which 

 it would pay you to grow for cutting, 

 are: Maman Cochet, pink; Maman 

 Cochet, white; Gruss an Teplitz, rich 

 scarlet; Clothilde Soupert, French 

 white, pinkish in center; Hermosa, 

 pink; Francisca Kruger, coppery yel- 

 low, and Souvenir de Catherine Guillot, 

 coppery carmine, shaded orange. The 

 last two are pure-blood teas and more 

 tender than the hybrid teas. All the 

 foregoing roses, in your climate, would 

 be better lifted and stored in a cold- 

 frame just before the ground freezes, 

 planting them out as early in the spring 

 as the soil will allow. They could be 

 buried outdoors and some protection 

 laid over them, if no frames are at dis- 

 posal. 



A few hybrid perpetuals which are 

 free blooming and would be hardy in 

 your latitude, are: Mrs. John Laing, 

 Mrs. R. G. Sharman Crawford, Gen. 

 Jacqueminot, Ulrich Brunner, Frau Karl 

 Druschki, Mme. Gabriel Luizet, Prince 

 Camille de Rohan, Suzanna de Rodoca- 

 nachi and Captain Hayward. Plants 

 that are field-grown and budded or 

 grafted on the brier or Manetti stock 

 are much better than those on their own 

 roots in your climate. 



Allow hybrid teas and tea roses eight- 

 een inches of space each way and hy- 

 brid perpetuals twenty-four to thirty 

 inches. C, W. 



SENSATIONAL NEW SWEET PEA. 



Mr. Bland, secretary of the Horti- 

 cultural Society at Vancouver, B. C, 

 has raised a new sweet pea that ob- 

 servers there regard as little short of 

 sensational. It has been named Jimmie 

 Bland. The flower shown in the accom- 

 panying illustration was one of a vase of 

 tgfpelve spikes exhibited at the recent 

 flower show of the Victoria Horticul- 

 tural Society. The color is pure white, 

 Etta Dyke being the seed parent, 

 crossed with an unknown variety. The 

 spike shown is little more than an aver- 

 age, several others of the vase being 

 equally good. 



The following measurements are cali- 

 per, no stretching being done to in any 

 way increase the size, the measurements 

 being taken as the flower stood in the 

 vase. The lower flower was two and 

 one-half inches across; second from the 



bottom, facing the camera, two and five- 

 eighths inches; second from the top, 

 two and one-fourth inches. The petals 

 were thick and heavy. The stem was 

 thirteen inches long to the base of the 

 bottom fiower and as big and rigid as an 

 average carnation stem. Single seeds 

 were planted from pots March 1. The 

 plants in September were ten feet high 

 and three feet in diameter and vigorous 

 almost past belief. Seeds are being 

 sent to the trial grounds of the National 

 Sweet Pea Society of England. The 

 variety will be disseminated under the 

 auspices of the British society. This 

 variety created a sensation in a show 

 where there was a collection of sweet 

 peas I never saw approached. 



At this exhibition there was little 

 to interest the average florist, outside 

 of the sweet peas, but these were simply 

 magnificent. Some 300 varieties were 



