12 



The Weekly Florists^ Review^ 



OCTOBEU C, 1910. 



CYANIDE ON ROSES. 



Will you kiii(ll\- state how much 

 I'otassium cyanide and sulphuric acid 

 lo use for 1,000 cubic foot of air space, 

 to be used in a house of roses? What 

 damage is likely to occur to foliage 

 and flower petals if used too strong? 

 r understand the dangers accompanying 

 this gas, and its method of applying, 

 tor thrips, apliis. etc. Should the 

 i-arthcnware })ots or jars be kept, say, 

 throe or four feet away from the plants 

 to provout the fumes from scorching? 



E. 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 Jitmospliore. foliage, 

 etc., should be as dry as possil)lp. 



This dose should be repeated every 

 forty-eight hours to exterminate the 

 newly hatched insects, until the house 

 is perfectly free from them. 



Ribes. 



BABY DOROTHY FOR EASTER. 



Wliat time slit>\ild ] bring iu iii\ 

 Baby Dorothy roses to liave them in 

 bloom for Easter? My house is kept 

 at 50 degrees during the night and GO 

 degrees during the day. J. C. E. 



.'-^t:ut llie plants about tlic ciicl of 

 • haiuary in an average night tcnipcra- 

 ture of f)0 degrees. In this heat they 

 will flower nicely for E;ist<i\ wliiili in 

 ion ('f)ines as late as Ajirii Itl. 



< . W 



POT ROSES FOR WINTER. 



Would it jiay ine to take up !i few 

 jilants of Gruss an Teplitz ami Prince 

 Caniille de Hohan now to forro for this 

 winter, and could T have them in flower 

 liy the first week in .January? If so, 

 would yo\i kindly lot me know how to 

 [)rocoed with fhoni to get them in flower 

 by that time? 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 .lanuary. Cruss ;in Teplit/. is a 

 hybrid tea, which is one of the best 

 perpetual blooming roses we have. On 

 the other hand. Prince Camille do Rohan 

 is a hvl>rid perpetual. You could lift 



and j,ot 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. 



OUTDOOR ROSES FOR 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 

 iu tlune, 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 w;iterod during dry 

 woatiior. A few desirable varieties for 



rutting, among hybrid teas, are: Caro- 

 line Testout, satiny rose; Killarney, 

 bright pink; White Killarney, white, del- 

 icately suffused with pink; Mme. Ab«l 

 Chatenay, carmine rose, shaded salmon; 

 Kaiserin Augusta Victoria, pearly white; 

 Mnie. 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 Bruuner, Frau Karl 

 Druscliki, 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. liland, soiiotaiy of the Horti- 

 cnltur;il Society at Viincouvor. ]',. C, 

 has raised a new sweet poa that ol) 

 sorvors fhoro regard as little short of 

 ^oiisatioiial. It has boon nanii-d Jirninic 

 r.laiid. The flower shown in the accoiii 

 |i.inying illustr;ition was one of a vase of 

 t..weho spikes exhibited at tiio rocont 

 tlower show of the Victoria ifortii-nl 

 tiiral Socioty. The color is pure white, 

 l!t1,i Dyke being the seed ])aront, 

 ( rossoil with an unknown variotv. The 

 sjiiko shown is little more than an aver 

 ago. several others of the vase bein<' 

 ocpially good. 



The following nieasnrenionts are cali 

 j)er, no stretching being done to in anv 

 w;iy increase the size, the nieasuromonts 

 being taken as the flower sloo<l in the 

 vase. The lower flower was two and 

 one-half inches across; second from the 



I'ottoin. facing the camera. .jhvo and five- 

 eighths inches; second from the top. 

 two an<l one fourth inches. The petals 

 wore thick and heavy. The stem was 

 thirteen inches long to the base of the 

 I'ottom flower and as big and rigid as an 

 ;ivei;igo carnation stem. Single seeds 

 were planted from pots March 1. The 

 I'lants in September were ten feet high 

 ■ iihI three feet in diameter and vigorous 

 ■•"Iniost past belief. Seeds are l.ein- 

 ^■ent to the trial grounds of the National 

 !^w,M-t Pea Society of England. The 

 varnMy will be disseminated under the 

 ""Apices of the British societv. This 

 v.anety created a sensation in" a show 

 \\hero there was a collection of sweot 

 peas I never saw approached. 



At this exhibition there was litth> 

 to interest the average florist, outside 

 "1 the sweet peas, but these were simply 

 '-':ign,f,oent. Some .^lO varieties were 



