October 18, 1913 



HORTICULTUEE 



533 



ROSE GROWING UNDER GLASS 



. CONDCCTED BY 



Liming the Benches 



Where the last of the mulch is seen the benches will 

 require a little lime, especially if the plants have not 

 had a dose of it this season. Use only dry, air-slaked 

 lime, that has been screened to make it free from all 

 lumps. Apply just enough to whiten the benches along 

 the surface. This will be all that will be required for 

 the one dose. Follow with the hose, watering the plants 

 well so that the water runs through the benches fairly 

 good. This will insure proper watering, and will also 

 give every rootlet a chance to secure some of the lilne. 

 It is well to have the benches a little on the dry side 

 when the lime is applied, for then the watering which is 

 given afterward will be felt more by the plants and they 

 will "wake up." Do not apply another coat of mulch 

 for at least a week after liming, for lime and manure 

 should never be mixed. 



The Temperature at Night 



This can still be kept up to G 1 degrees F. even though 

 the nights are much cooler. The days are still warm, 

 and the thermometer is bound to rim up at mid-day, ami 

 too great a difference in the two temperatures is some- 

 thing that is not wanted. Hot water is not required a~ 

 yet where steam can be used. It is very nice to have 

 both. It is then a very simple matter to turn on a ])ipe 

 or to take one off as may be needed. 



Sulphur on the Pipes 



Although it is advisable to apply a little sulphur to 

 the pipes every now and tlien, tliere 

 is danger of overdoing it, as is the 

 case with many other greenhouse 

 operatifms. Be very careful not to 

 apply the sulphur all over the pipes. 

 This would without doubt ruin the 

 plants. Apply a little of it here and 

 there along one of the pipes, about 

 every twenty feet. Then be sure 

 there is not more than ten pounds 

 steam pressure on the pipes when 

 the sulphur is applied. If the pipes 

 are too hot the sulphur will evap- 

 orate very rapidly : in many cases it 

 will burn, and then there will be 

 some damage done. It is a good 

 idea to have a little air on the houses 

 that are subjected to this treatment, 

 for the ventilators will carry off any 

 surplus frames and the fumes inside 

 will never become strong enough to 

 do harm. Where only hot water is 

 used for heating, sulphur evap- 

 orators will have to be resorted to. 

 There are several of these on the 

 market, but they must never be 

 placed into the hands of an amateur. 

 In fact one of the evaporators bears 

 the inscription, "Place me not in the 

 hands of a lunkhead." This goes to 

 show that manufacturers of these 



evaporators realize the danger of over-tilling the house 

 with the fumes. Wienever using sulphiir, remember 

 that the fumes of sulphur are the greatest enemies of 

 plant gro«i;h, .and if made too strong, will kill the 

 plants quicker than the disease. 



The Sod Heaps 



Are your sod heaps all put up, and ready for next 

 spring ? That is a question often asked here and there, 

 and yet there are so many places where this important 

 matter is left until the very last minute and then the 

 teams, men and all, are rushed around to get the work 

 done on time. Sometimes the sod heap will be put up 

 on one end while the men will be chopping it down, and 

 carrying it into the greenhouses on the other end. This 

 may be a hurry way to do, but it is not the very best for 

 the roses, and where the growers are none too careful 

 the results of this haste will show in the diminished cut 

 of roses, poorer plants, and in more eases than one, plant 

 diseases. Put up your sod heaps in the fall, and avoid 

 a good many troubles. 



The Partly Cloudy, and Partly Sunny Days 



On sucli days as these it will be impossible to maintain 

 a steady temperature, and the best thing to do is to re-, 

 duce the air when the temperature falls below 72 degrees 

 and then put on more air should the houses go above 78. 

 Usually these clouds are accompanied by a heavy wind, 

 and it will be found very convenient to keep a little 

 steam right on hand to turn into the houses, should it 

 become necessarv. 



EXHIBIT AT FLORISTS' 



CLUB OF WASHINGTON. 



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\.'*<^ 





Showing C. H. Totty's CoUection of Early Flowering Chrysanthemums, 

 l.ineous Displays by Local Growers. 



also MIscel- 



