Skptembeb 4, 1913. 



The Florists* Review 



11 



Greenhouse Built Over Boiling Spring in Yellowstone Park. 



it in check, and if so how is it to be 

 applied? L. K. 



I have seen a little of the disease 

 referred to, but never on any consider- 

 able scale. It may have had its incep- 

 tion in the cutting bench, a fungus in 

 * the sand causing the trouble. It is 

 ■ more probable, however, that in your 

 case it has been due in large measure 

 to uncongenial atmospheric and soil 

 conditions. A leaky roof would be sure 

 to help spread fungous diseases. 



Spraying with a fungicide would be 

 the best remedy. It would be well to 

 apply it even before any fungus ap- 

 I)ears. Bordeaux mixture is a reliable 

 • remedy. I have also found Fungine 

 good. I would advise giving your 

 j>lants an application once a week. 



C. W. 



CYANIDE FOR MIXED CROPS. 



What quantity of potassium cyanide 

 would you advise as safe for fumigat- 

 ing a house planted with mixed crops, 

 mostly chrj'santhemums, carnations, 

 sweet peas and Sprengeri, and after- 

 ward planted with feverfew, snap- 

 dragons, calendulas and lupines? The 

 house is 25x150. One side is three and 

 one-half feet high to the eaves and the 

 other side is four and one-half feet 

 high. The ridge pole is somewhere be- 

 tween thirteen and fourteen feet high. 

 The beds are solid, but are raised on 

 an average one and one-half feet above 

 the level of the ground. Another house 

 is planted with mums now, to be fol- 

 lowed by violets for the winter. This 

 house is 16x100 and the ridge pole is 

 about eight feet high. One bed, 

 though solid, is raised within two feet 

 of the eaves, and the other within one 

 and one-half feet. L. K. 



To kill black or green aphis and 

 thrips, I would use for your larger 

 house ten ounces cyanide of potassium, 

 twenty ounces sulphuric acid and thirty 

 ounces ^^ater. It would be better to 

 divide this so as to put it into four 

 jars. For the smaller house, which con- 

 tains approximately 6,500 cubic feet, 

 use three ounces cyanide, six ounces 

 sulphuric acid and nine ounces water, 

 placed in either two or three ,iars. For 

 mealy bug you wou'd need to use a dose 

 fifty per cent stronger than that pre- 

 scribed for your larger house, but 1 

 would not advise you to use it so 

 strong, as some of the plants named are 

 easily damaged. Snapdragons are per- 

 haps more easily damaged by gas than 

 any other bench crop grown. They are 



not scorched, but the tops bend right 

 over, perfectly limp. Lupines and 

 calendulas are fairly tender, but stand 

 more gas than snapdragons. 



Always use the gas on the evening of 

 a cool day. . The hi^er the tempera- 

 ture, the greater the danger of injury. 

 Be sure to lock the doors and allow no 

 one to enter until the following day, 

 when the houses can be freely aired. 

 The foregoing formulas are for an all- 

 night exposure and have proved to be 

 perfectly safe from November 1 to 

 April 1, but some damage might result 

 later in the season. C. W. 



HEATED BY A HOT SPRING. 



A unique way of utilizing the by- 

 products of nature was hit upon by the 

 caretaker of one of the hotels in Yel- 

 lowstone Park, who conceived the idea 

 of building the greenhouse which is 

 shown in the illustration over a hot 

 spring. He realized last winter that a 

 great deal of heat was going to waste 

 for lack of the means tO; make use of 

 it, and devised the plan of erecting a 

 greenhouse over a boiling spring. 



When a new hotel was being built 

 in the park a few years ago a number 

 of old windows were discarded, and 

 these were used in the construction of 

 the greenhouse. The great diflSculty 

 was to get soil of the right kind for 

 the cultivation of plants. The neigh- 



borhood of the spring was apvered with 

 a crust of mineral matter and lavi. So 

 fertile soil had to be brought from the 

 hills some distance away to be , used 

 in the benches. 



Upon the completion of the house, he 

 immediately planted lettuce, radishes, 

 cucumbers, tomatoes and mushrooms. 

 While the outside temperature during 

 the winter" was far below zero and 

 occasionally as much as 50 degrees be- 

 low, the plants in the greenhouse flour- 

 ished. At times the heat from the 

 boiling spring was so intense that it 

 became a serious problem to moderate 

 the temperature to the right extent. 



According to all accounts, the veg- 

 etables flourished in the greenhouse dur- 

 ing the winter. The house is of equal 

 value in the summer time, for the cold 

 nights prevent the cultivation of plants 

 which are at all tender, although the 

 days are usually extremely hot in July 

 and August, 



A WELL GROWN SOHIZANTHUS. 



]f there are any florists who are not 

 fully aware of the beauty of Schizan- 

 thus Wisetonensis as a pot plant, the 

 specimen showij in the illustration may 

 perhaps convince .them of the possi- 

 bilities that exist in this variety of 

 butterfly flower. The plant shown was 

 grown at Westmoreland, Lake Foresl, 

 111., the estate of A. B. Dick, where 

 John Tiplady is superintendent. Mr. 

 Tiplady, however, says that a good 

 share of the credit for the flourishing 

 condition of the schizanthua is due to 

 his foreman, Robert Kuehne, as the 

 plant was under Mr. Kuehne 's personal 

 care. 



It was grown in a 10-inch pot, Mr. 

 Tiplady says, and measured forty inches 

 in height and thirty-six inches in diam- 

 eter when the photograph was taken. 

 It was in full bloom April 15. The 

 seed was sown August 15 and the 

 plants were given the coolest possible 

 treatment from start to finish. They 

 resent heat or coddling in any way, 

 says Mr. Tiplady, but delight in a cool 

 bed of cinders in full sunlight, with 

 plenty of drainage and a rich, porous 

 soil. Their season of blooming, he 

 adds, may be controlled to some ex- 

 tent by the potting; the larger the 

 pot, the later the date of flowering. 



. .'fev 



^ -. 





a". ' ■. 



I V/iSv-i 





Schizanthus Wisetonemit Grown at Lake Forest, III. 



