September 20, 1913 



HORTICULTURE 



3;) 9 



ROSE GROWING UNDER GLASS 



^ CONDDCTED BY 



Questions by our readers In line with any of the topics presented on this page will be (.ordially received and promptly answere<* 

 by Mr. Ruzicka. Such communications should invariably be addressed to the office of HORTICULTURE. 



Black Spot 



As the season advances, the danger from this disease 

 will be greater; consequently, nmch greater care will 

 have to be taken towards its prevention, lor should spot 

 be allowed to gain a foothold it will require heroic ef- 

 forts on the part of the grower to rid the plants of it. 

 And the plants will receive a setback, no matter how 

 carefully the cure may be applied. Sometimes, as it 

 often hajjpens, the cause for spot may be traced to the 

 fact that the plants receive much more water than they 

 should, after cutting heavily. It is much better to keep 

 them on the dry side a least bit, thus allowing no sur- 

 plu:- moisture to accumulate in the soil. Not that we 

 woidd recommend drying the plants. This would be 

 ruinous. Then watch carefully for the appearance of 

 spot. Pick ofl: all affected leaves and burn them at once. 

 Leaves that are touching the surface of the soil in the 

 bench will usually be the very first to become diseased, 

 therefore it is well to keep these picked off, as we have 

 time and time again suggested. Proper ventilation will 

 also be a great preventive, for when the plants are chilled 

 mornings with damp cold air that should be passing out 

 through the partly opened ventilator, and a little steam 

 to help it move, they cannot be expected to be in the 

 best of health. Another great trouble is that the plants 

 remain wet over night, because they had not been shook 

 after syringing. This is probably the greatest cause. 

 Always after the jjlants have been syringed, shake them 

 well so that all the water that may be standing on the 

 foliage will be dislodged. Then the last thing at night 

 it is well to blow a little air-slacked lime underneath the 

 plants. This lime should be perfectly dry, or it will not 

 be as effective as should be. Do not use too much 

 strength in blowing the lime. The ideal way is to blow 

 the lime just under the plants and let it slowly rise 

 among them. If the bellows are worked too hard the 

 lime will be blown all across the benches and out into 

 the walk on the other side, where it will have but little 

 effect on the dampness of the house. 



Timing the Crops 



It is not a very good policy to force the plants very 

 much at this time of the year. We do, however, try to 

 make the plants give their first crop before the chrys- 

 anthemums come flooding the markets. Sometimes the 

 prices received for the roses in the chrysanthemum sea- 

 son will be greater than those received earlier, but often 

 they will be less, and we have found it pays to be a little 

 off crop while the chrysanthemums are in. Then, too, 

 we are more sure of a winter supply, for the roses have 

 more chance to come back than they would if the first 

 croj> is cut off late in the fall. With Beauties, it is very 



difficult to arrange the crops as you would Killarneys or 

 other roses, tor they will not behave themselves as they 

 should, and will flower when they feel like it. We 

 never try to dictate to the plants. Just simply give 

 them ideal conditions for growing and then let them do 

 the rest. Above all things we would never advise any- 

 one to trj- to hold the Beauty back. Once they receive 

 a check of any kind it will take them a long time to pick 

 up again. 



Tying 



This should not be neglected the least bit as all the 

 shoots that are not tied and are allowed to lie aroiind 

 among the other tied growths, are very likely to go blind 

 and will be of no use to the plant besides being a loss to 

 the grower. Keep right after the tying, especially among 

 the Beauty plants. Killarneys and such require but 

 little attention in this respect and the cost of produc- 

 tion is greatly reduced thereby. But with the Beauties 

 it is different and once they are allowed to lie around 

 they will always show the effect of this. Of course we 

 do not mean the time they are set out, for then it does 

 them good, but after they reach the second and the third 

 wire things are different. By keeping right after them 

 all the time it is a very simple matter to keep them 

 straight, but after they have been allowed to go their own 

 way for a while, it will be quite a task to bring them 

 around to something like systein again. 



Tying and Red Spider 



These are so different from one another that it will 

 seem strange at first to see the two subjects linked to- 

 gether. And yet it will be found that tying when prop- 

 erly done will be a great help in keeping the red spider 

 out. Do not bunch the plants up when tying, but sep- 

 arate them as much as possible, thus giving every shoot 

 all the chance in the world to get a cleansing bath every 

 time the hose is brought around. This will also have its 

 effect on growth, as will be noticed, for the light will be 

 well distributed and the plants will all have an eq^ial 

 show. Black s])ot will also be prevented in a way, for 

 there will be no place for the moisture to condense and 

 start it. 



Liquid Manure 



Before many days go by the liquid manure outfit will 

 be put into use again, and therefore it would be a very 

 good idea to see that all is in perfect working order and 

 that a good supply of manure and stuff that is to be used 

 in making it is on hand, where it can be gotten on a 

 moment's notice. A very good plan is to have a suit- 

 able sized shed built over the tank, and keep all the 

 materials, fertilizers, etc., right there. It is an easy 

 matter then to see what there is on hand and no run- 

 ning all over the place will be necessary to disclose this 

 information. Keep a liberal supply of plant food on 

 hand all the time. It pays in the long run. 



