THK CANADIAN H0KTICULTURI6T. 



183 



one dollar and a half every month for 

 four months, varying somewhat accord- 

 ing to the size of the roots, for the 

 larger these are the heavier will be the 

 tops. The same roots cannot be used 

 a second time ; a new stock has there- 

 fore to be raised from seed every year. 

 — W. H. Bull, in Am. Garden. 



INSECTS WHICH INF]:ST THE ROSE. 



The insects infesting the i*ose are 

 quite numerous ; the habits, (fee, of 

 some are still comparatively little 

 known, and thus far it has been very 

 difficult to arrest their ravages or sens- 

 ibly diminish their numbers by artifical 

 means. European entomologists num- 

 ber and describe at least forty species, 

 many of which have not yet found their 

 way to us, but we have enough to keep 

 us at work in order that we may suc- 

 ceed in rose culture. Harris, on "Insects 

 Injurious to Vegetation," is the only 

 American authority on these insects. 

 I refer the reader to that work for des- 

 criptions of several species which have 

 been studied up. There is one I wish 

 to call attention to, which I have failed 

 to see described, and that is a small 

 white fly which skeletonizes the foliage 

 of out of door roses beginning with the 

 leafing out of the rose. It is quite a 

 small insect, looking like a white dust 

 rising from the bush when shaken. 

 By midsummer the leaves are faii'ly 

 skeletonized and are brown looking. 

 I have succeeded in keeping them off 

 the bushes by syringing with a decoction 

 of white hellebore in water, about a 

 tablespoonful in a pail of water. I wet 

 it at first with quite warm water, then 

 dilute and apply with a syringe, when 

 the leaf buds begin to swell, and repeat 

 after about two or three weeks. 



The rose-chafer I find a most persistent 

 enemy of the rose, as well as of the 

 grapevine and several other plants. I 

 find no better way than hand picking 



to diminish their numbers. I notice 

 that the Massachusetts Horticultural 

 Society endorses the use of Paris green 

 to destroy them on grapevines. I have 

 not tested that as a remedy, but think 

 it might be practicable where one wishes 

 to run the risk. Hai-ris' description 

 of this insect in its various stages is 

 quite interesting, and will well repay a 

 perusal by any one interested in natural 

 history. Rose slugs also defoliate the 

 rose bush, but hellebore will destroy 

 them, if judiciously applied. The scale 

 can be removed by hand, or by washing 

 with strong soap suds. — W. H. White, 

 in Country Gentleman. 



GLOIRE DE DIJON ROSE. 

 Of all the roses in cultivation, this, 

 in my opinion, is the most useful. It 

 is the last rose of summer and the first 

 of spring. Indeed, with two or three 

 plants in a cool greenhouse, and the 

 same number on any wall out of doors, 

 a constant supply of blooms may be 

 had from February until November. 

 In constitution it is most robust, as 

 there is no situation in which it will 

 not succeed, and I cannot remember a 

 Gloire de Dijon dying of either disease 

 or old age : one of our plants here I 

 know will soon be out of its teens, and 

 still it grows as robustly and blooms as 

 freely and profusely as the youngest of 

 them. During the last three weeks we 

 have cut at least two hundred blooms 

 from this plant which occupies a re- 

 stricted place in a cool conservatory. 

 Another one which was planted in a 

 miniature form at the end of an un- 

 heated peach house three years ago, has 

 this spring produced five hundred buds 

 and blooms ; and this is only one crop, 

 as successional ones will follow until 

 the end of the season. If this rose has 

 a fault at all, it is in being over-flori- 



