y^;. r • '"/r-pi y-W^/ T 



JUNB 29. 1905. 



The Weekly Florists' Review^ 



305 



Violet House of the First Type, Showing Arrangements of Beds, Pipes and Ventilators. 

 (Jars, Bag's and StrlngB In place for fumigating with hydrocyanic acid gas.) 



are apt to have yellow leaves form upon 

 them. These should all be taken off. 

 Great care must be exsrcised not to set 

 the plants too deep; otherwise the crown 

 will be covered and the plant will die. 

 In transplanting from pots care must 

 be taken in handling the violets. If the 

 plants become pot-bound they are apt to 

 remain stunted the rest of the season. 

 If too many roots are formed it is well 

 to crush slightly or break the ball. Our 

 experience with potted plants has been 

 such that they have been practically 

 abandoned, preference being given al- 

 ways to the flat-grown ones, for the rea- 

 son that the roots do not get compressed 

 into such a small space and as a rule 

 they take hold of the soil much more 

 quickly than those grown in pots. As 

 rapidly as the plants are put out they 

 should be carefully watered. 



Gtre of Plants. 



After the planting there comes the 

 necessary care of the young stock 

 throughout the summer months. It will 

 be noted that all of our directions apply 

 to plants grown under glass through 

 the entire summer. This has been found 

 so much more satisfactory than growing 

 them in the field that the field method 

 is now conducted only in a very limited 

 ^vay. Practically in all the important 

 s'-ctions the crop is grown entirely under 

 «las3 from season to season. It some- 

 times occurs that it is not practicable to 

 Ret the glass on new houses early in the 

 •spring. We have planted houses where 

 t!-e construction work has all been finished 

 •"j^eept the glazing and the piping. It is 

 a ^lisadvantage to work under such con- 

 ' tions, however, as the rains are apt to 

 ^ash out the young plants. Furthermore, 

 V'cre is no easy method of controlling 

 '"Sect pests, as fumigation under such 

 fireumstanees is impracticable. We 



therefore try to have the glass on prior 

 to the time of getting out the plants. 



During the growing season the ground 

 must be constantly worked in order to 

 prevent baking. Water is, of course, 

 absolutely essential to the best growth. 

 No specific directions can be given on 

 this point. The main thing to be looked 

 after is never to give the plants an op- 

 portunity to wilt. Keep the ground in 

 good growing condition. This means 

 about as it appears a day or two after 

 a good rain in the open air. Judgment 

 and experience are the only guides that 

 can be depended on for this sort of 

 work. 



As the season advances and the plants 

 become larger, repeated syringing with 

 water should be made in order to keep 

 down the red spider. This and the other 

 insect pests and diseases will be men- 

 tioned more specfically under another 

 heading. 



It is necessary to go over the plants 

 every week or ten days, cleaning off the 

 dead foliage and keeping the ground 

 thoroughly worked. The time required 

 for this will become greater as the sea- 

 son advances. By the first of August, 

 where early planting is followed, the 

 plants will cover about half the ground 

 and runners will be forming. All of these 

 must be carefully cut off. The critical 

 time in the growing of the plants comes 

 in the long, hot days the latter part of 

 August and the early part of September. 

 Plants are then making a strong growth 

 and unless carefully watched are likely 

 to become too dry. Insect attacks and 

 diseases are also likely to be more abun- 

 dant at this season of the year. 

 (To be Continued.) 



The Eevikw^ will send the Pronouncing 

 Dictionary on receipt of 25c. 



HEATING AND TEMPERATURES. 



I have a greenhouse 16x40 feet and 

 am constructing a new one 24x70. I 

 want to raise part roses in the small 

 house and would like to know what other 

 flowers I could raise to the best advan- 

 tage in the same room with roses and 

 what temperature I should keep in this 

 room? What temperature should I keep 

 in the new house for general stock f I 

 have a hot water furnace. How should 

 these rooms be piped? W. 8. L. 



There are many things that would do 

 well in the rose house temperature. On 

 the side bench bouvardia would thrive. 

 Smilax would be all right if there is head 

 room. Lilium longiflorum and the warmer 

 blooded bedding plants, such as coleus 

 and, later, caladiums and cannas would 

 like the temperature. It is a great pity 

 you cannot devote the entire space of this 

 little house to roses. If you want any, 

 you will need more than this house will 

 produce under the best management and 

 on account of ventilation, fumigation, 

 syringing, etc., roses should be grown 

 entirely by themselves. 



The temperature of the larger house, 

 which is to be devoted to general stock, 

 which means presumably flowering plants 

 for Christmas and Easter, to be fol- 

 lowed by bedding plants, should be about 

 50 degrees at night. There is usually a 

 warm and a cool end to every house, no 

 matter how well heated the house may be. 

 That is, there will be a difference of 3 or 

 4 degrees. No temperature will exactly 

 suit a great variety of plants, but 50 de- 

 grees at night will grow, and flower, 

 more of our popular plants than any tem- 

 perature above or below. 



Principles for Heating. 



Without a plan of your houses, depth 



