Aritir, 0, l'J05. 



The Weekly Florists^ Review* 



U37 



"GREEN GOODS" 



You will need a great many "greens" for the 

 Spring opening decorations. Plenty Asparagus, long, 

 heavy strings. Smilax is getting scarce in this market 

 but we can supply any quantity on shortest notice. 



ORDER ST HEADQUARTERS. 



"•= ^''^o-'o^kYng EASTER ORDERS 



E. C. 3NLING, 



The Ziartrest, Best Equipped and Most Centrally Iiocated 

 Wholesale Cut Flower House in Chicag-o. 



32-34-36 Randolph St., I^hir^nn^ III 



I «-„ n!..—^« i.i«»i.«—. / 1978 and 1977 Central. V/llll^aUU* Mill 

 Long Distance telephones j j^^ Automatic ^^ ^ 



L. 



AMEKICAV BEAUTY. Per doz. 



80-36-inch stem $100 



24-inch stem 3.00 



20-inch stem 2.00 



15-inch stem 160 



12-inch Btem 100 



Short stem, per 100, $5.00 to $S.0O 



Per 100 



Brides $3.00 to $6.00 



Bridesmaids 3.00 to (!.00 



Liberty 4.00 to 12.00 



GoldenGate 3 00 to 8.00 



Chatenay 4.00 to 10.00 



Carnations 1.60to 2 00 



larire and fancy 3.00 



Violets 50to .75 



Valley 2 00 to 3.00 



Callas perdoz.,$1.25 8.00 



Tulips 2.00 to 4.00 



Daffodils 3.00 



Freesias 3.00 



ForKet-menot 150 



Easter Lilies doz., $1.50 



Sweet Peas 75 to 1.00 



Mignonettes iS to .75 



AsparaRrus, per string, 25c to 50c 



Asparagus Sprengeri 2 00 to 5.00 



Ferns per 1000, $3 00 .30 



Galax per 1000, $1.25 .15 



Leucothee -75 



Adiantum 100 



Smilax per doz., $2.00 15.00 



Aslc for special quotations on lOCo lots 

 Hoses and Carnations. 



Subject to ehaBge wltbont notice. 



Mciitlcin Ttip lievlpw wlieTi you write. 



matu. is tlie dilVcionce in the tiglitncss 

 of (liiroi'cnt gieeubouscs. It is conse- 

 quently iinjiossible to give speeilic dircf- 

 tions wliii-h ^vill be suitable under all 

 circiinistanees. 



"In most greenhouses, ])robabl.y 0.007 

 gram of iiotassiunVcyluiide for each cubic 

 foot of s]iace""^r an exposure not ex- 

 ceeding tlirce hours represents the 

 amount which will prove most cll'ectivc 

 for treatment of the insects without in- 

 jury to tomato or cucumber plants. In 

 many cases O.ol gram ]ier cubic foot has 

 been found suitable for the same ex- 

 posure, l)ut this should not be used ex- 

 cej)! in loose greenhouses where, after 

 trial, a smaller amount is found inef- 

 fective. In all greenhouses when an at- 

 tempt is to bo made to control the white 

 fly with hydrocyanic-acid gas. it is ad- 

 visable to tirst use not nn)re than O.OO-") 

 gram per cutiic foot of space for a three 

 hours' exposure. If this amount is sulli- 

 cient for the house, none of the adults 

 will recover after the fumigation, though 

 in the course of two or three days many 

 more will emerge from the pupa cases. 

 The larva', when destroyed, as they 

 should be by tiie fumigatiiui, change in 

 t\\o or three ilays from their normal 

 glistening, yrecMiish cidor to ;i yellowisii 

 or brownish color. When this result is 

 not obtained by the lirst test, one or 

 more further tests slunUd be made, in- 

 creasi'it; the ainc)unt of ]iotassiuni cyanide 

 0.0(11 gram per cidiii- foot of spate for 



faeii test, with thi' lays intervening,' 



to note results-, until an airioinit i-; 

 reachi.l which is sulli<-ieiit to destroy tlie 

 larvie. or until the tender lea\es of' the 

 plant show injuries as a result of the 

 f umiL;;it ion. 



"Tests. tliu> far, with otlier green- 

 house plants likely to be attacked liy the 

 white fly, according to available records, 

 have iill l>e(>n for a much shorter ex- 

 posure than three hours and with a much 

 larger amount of potassium cyanide, but 

 it is probable that in ease plants other 

 than the cucumber and tomato reipiire 

 treatment for this insect, proliniinary 

 tests in a fumigating box or in a small 

 greetdiouse will show that the amount of 

 chemicals .ami the length of exposure 



recommended for tin se two can be used 

 witlniut tile slightest tlaiiger to other 

 ))lants. In nuist cases mucli larger rates 

 of |)iitassium cyanide ])ei' culiic foot can 

 be used. 



"Fumigation of ]dants witii hydro- 

 cyanic-acid gas should be at night and 

 tlie foliage of the ])lants should hi- dry. 

 The greenhouse should be made as tight 

 as possible, all entrances but one (dosed 

 and locked, and arrangements made to 

 open a few ventilators from the outside 

 at the expiration of the period of ex- 

 posure. A house when fumigated shouM 

 not be unnaturally tight as a result of 

 rain or snow, otherwise the greater 

 amount of gas confined in it under these 

 conditions m;iy injure the jdants. The 

 materials used for. th<> generation of the 

 g.as are ninety-eight ])er cent potassium 

 cyanide, commercial sul|ihiiric acid, an<l 

 water, the proiiortions generally used be- 

 ing one-half more acid (liquitl measure') 

 than potassium cyanide, ami one-half 

 more water than .acid. Having deter- 

 mined the cubic contents of the house 

 and the total amount of jiotassium cy- 

 anide, sulphuric acid, and water to be 

 used, these should be divided into parts 

 representing each twenty-five feet of 

 lengtli of the greenhouse. Small re- 

 ceptacles must be used. They should be 

 either of e;irthenw:ire or glass. In many 

 eases, ordin;iry ^lass tumblers will be 

 suitable, though the .liluted acid should 

 never more than one-fourth fdl the re- 

 eeptacdi'. I'.acli lot of the pot.assium ev- 

 anide should be jiulverized or broken up 

 into stn.'ill pieces, wrapjied in thin ]iaper. 

 .•nid laid beside one of the receptacles, 

 these being ]daced at intervals of about 

 twenty-five feet on the tloor of the house. 

 In e;udi recejitacde first pour the proper 

 .amount of water and then the acid. Re- 

 ginning with the end of the house farth- 

 (>st from the exit, drop into each recep- 

 tacle, in succession, the ])aekagc of po- 

 tassium cyanide, proceeding as quickly 

 as possible toward the exit. During the 

 few seconds the operator is in the house 

 after the generation of the gas is started, 

 the breath should be held to prevent even 

 the least bad effects. Close and lock the 

 door of the house and, after three 



hours, partially ventilate it by opening 

 the ventilators, previously arranged for 

 op(!niiig from the outside. One ventilator 

 for every twenty-live or thirty feet, 

 opened for ten or fifteen minutes, is suf- 

 licient to protect the plants from possible 

 ijad etTeets of over-exposure to the gas. 

 Before inhaling air in the house, how- 

 ever, the ventilation should be more thor- 

 ough, so that no odor of the gas, which 

 is much like that of peach pits, can be 

 detecte<l. 



"A single fumigation will destroy 

 [iractically all of the insects except the 

 eggs and some of those in the late pupal 

 stane. Although one such treatment 

 might check the insects so that they 

 would not cause noticeable damage for 

 weeks, two subsequent fumigations two 

 and four weeks, respectively, after the 

 tirst will siibiect to the gas all of the 

 white Hies in the house in stages wherein, 

 under ordinary circumstances, they are 

 unable to withstand its destructive ef- 

 fects. 



Other Remedies. 



" I'limigation with tobacco, by burning 

 the refuse stems ;ind leave>, has no ef- 

 tVit oil the grei'iihoiise wiiite ily Ix^yond 

 temporarily stiipedying the ailults. The 

 adults may be destroyed, however, by 

 vaporizing in the infested h*)use certain 

 tobai-co extracts which are sold in liquid 

 form. To accomplish this result prelim- 

 inary tests should Ih' made, tirst using 

 the amount reeomimmded in the direc- 

 tions aecom]ianying the jireparatioii. The 

 .■itleni]pt to control the greenhouse white 

 llv by means of tobaccci extracts alone 

 has never, to the writer's knowledge, 

 proven successful, while many cases of 

 f.aihire have been rejiorted. The frequent 

 fumigation necessary to control the in- 

 sect when once it lias become abundant 

 would Ik? impractical and costly. How- 

 ever, in connection with syringing 

 the plants with a soap solution .such a 

 treatment may sonn^times be of value, al- 

 though only when the use of hydrocyanic- 

 ai'id gas is impossible or for some reason 

 undesirable. 



"Among the sprays, the best brands 

 of whale-oil soap, used in the proper- 



