February 26, 1916 



HORTICULTURE 



273 



ROSE GROWING UNDER GLASS 



. (ONDl'CTED BV 



Questions liy our readers in line with any of the topics presented on this page will be cordially received and promptly answered 

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



Early Planting 



Houses that are to be jiliUited early, say iu A])!'!! or 

 May, can be cut away back to tbe liard wood when cut- 

 ting roses, leaving no eyes at all. The additional stem 

 thus gained will be enough to make quite a difference 

 in the grades of the roses cut, as most of those that 

 were No. I's formerly will now become extras, and the 

 price they bring will be corresponding. It is only waste 

 to Iea\e the eyes when the houses are to be planted 

 soon, for the growth that may come from the eyes left 

 will not have time to develop into a bird before the 

 plants are torn out. If the plants ai'e to be replaced 

 again it will be best to keep them clean, feeding them 

 moderately all the time so that they will not lose any 

 of their vitality. If the plants are to be thrown away 

 it will bo as well not to do any more to them than is 

 necessai-y, and certainly no leaves should be picked and 

 no manure applied, unless there happens to be an extra 

 fine crop coming on which will take most of it out of 

 the soil. If the plants are to be thrown away, it may 

 also pay to run the houses a shade warmer being care- 

 ful not to carry it too far, so that the buds will not get 

 too small and bring very little in the market. Should 

 they become small it will be best to cut them a shade 

 tighter than is customary, and keep them for a day in 

 a moderate ice box, and they will develop to nearly 

 twice the size. This is done by a great many growers in 

 the summer and can be done in the winter too, only the 

 ice box must not be below 48 or the buds would not 

 open much if at all. 



Storing Manure 



Where a dairy is a part of the establishment, the ma- 

 nure that is not used up in the greenhouses often be- 

 comes a problem to the man in charge. There is no 

 set rule for storing manure as it all depends on local 

 conditions. With level land sown to grass or green cover 

 crop such as rye and vetch or wheat, it will be best to 

 spread the manure right out on the field as it will be 

 easier to do this now when the ground is frozen than 

 later when it becomes soft. Where the land is hilly and 

 no crops on it, it will be better to store in heaps here 

 and there, making the hauling for spreading later as 

 short as possible. These heaps sliould be nicely squai-ed 

 to look better and to keep as much water out of it as 

 possible, and should the heap get hot turn it over every 

 now and then. It will pay to do this for there is no 



( rT.Trr.TtBE .lamiary s, \\u.s mowing in the Arnold Arbore- 

 tum. In the text it is dearly implied that tliis magnolia in 

 flower is a stranger to Jackson Dawson. The photograph from 

 which our illustration was made had never been used be- 

 fore. That a print from the same or a similar negative has 

 been used previously elsewhere is no concern of ours. That 



better plant food than a good load of manure, the only 

 trouble being that through neglect or ignorance a large 

 part of the most valuable liquids and gases escajjc and 

 the results later are not as good as was expected. An 

 ideal way is to liave a good manirre shed with a concrete 

 floor and a cistern to receive and store all leaching. 

 This, however, is not to be had on most places hut the 

 manure pile should never to neglected. 



Sheep Manure 



As the sun gets stronger the rose plants will stand much 

 more feeding than they formerly did and liquid manure 

 may not always be applied when needed, also it may bef' 

 impossible to mulch just then owing to the rush of other 

 work. For this work a good brand of sheep manure can 

 be used to good advantage, being careful to select a good 

 brand, free from weeds and put out by a reliable dealer. 

 With bonemeal and tankage going up in price it will be 

 well to use a little sheep manure in place. It is rich 

 in nitrogen so it had better not be applied to houses 

 that are rather soft. It is also well not to apply too 

 heavy a dose all at once; rather apply another as soon 

 as the plants need more. The coarse manure can only be 

 used in the liquid manure tank, but the pulverized is 

 best applied right to the benches. See that there is 

 enough mulch on these to hold it where it is put so that 

 it will not wash all over when the benches are watered, 

 thus giving some places a lot of it and others ven' little. 

 It will be best to liavo the benches wet, or at least not 

 very drv when i( is applicil. same as with any other ma- 

 teria]. 



Keep After the Vents 

 As the sun is much stronger now llic houses will heat 

 up much quicker in the morning and the fires should 

 be stopped much sooner. It will also be necessary to 

 see that air is applied on time so that the hou.ses do 

 not get too hot. Mildew will be troublosoine again soon 

 so it is best to try to keep the plants clean, and this can 

 only be done by careful use of the ventilators. It will 

 be necessary to air the houses earlier in the morning 

 and not close them at night until sunset. This cannot 

 be done just yet, as ice will got under the ventilators, 

 but as soon as the longer days of March are here it will 

 be necessary, for if the houses are closed down too soon 

 the air will become stagnant and smelling and the 

 plants will mildew much quicker than if they have plenty 

 of fresh air all the time. 



IhiM'u Ikivu lii'iMi sulisiMjuent introductiuii;, ui M . .•.iiii'iiuim 

 to this country and to I-Iurope we do not dispute, but the 

 essential fact remains: — it was first introduced to cultiva- 

 tion from seeds collected In Japan by Professor Sargent and 

 that Veitch's owed their stock to this same source is stated 

 expressly in Hortiis Veitchii, p. 370. — [Ed. 



