THE CANADIAN HORTICULTUFIST. 



larly under the leaves, with whale-oil 

 soap — one pound in eight gallons of 

 water ; but, as a matter of fact this in- 

 sect very seldom does harm to the black 

 currants, owing to the fact that the 

 natural parasites — the Lady-bird beetles 

 — generally increase so much that they 

 clean out the lice before they have in- 

 jured the bushes. 



The best remedy for the Pear Slug is 

 undoubtedly to spray the trees with 

 Paris green, i pound in 200 gallons of 

 water, directly the slugs are observed. 



The worm that curls itself up in the 

 leaves of the peach tree is probably the 

 caterpillar of the Eye-spotted Bud-moth, 

 a very difficult insect to treat. The 

 remedy which has given the best results 

 is to spray the trees with Paris green i 

 pound, freshly slaked lime i pound, and 

 water 250 gallons. If you spray your 

 peach trees with Bordeaux mixture to 

 prevent the fruit rot, you may add the 

 Paris green to the Bordeaux mixture in 

 the same proportion as above, i pound 

 in 250 gallons. 



J. Fletcher. 



Rosa Rubifolia. 



1019. Sir, — Can you, through the Horti- 

 cultural journal, inform me and perhaps others 

 how the Rosa rubifolia should be treated to 

 make it blossom. I have been cultivating one 

 since 189:^, which has shown no signs of blos- 

 soming yet, although in canes it has made vig- 

 orous growth. If it is a climber, perhaps I have 

 been treating it wrong, in cutting back the 

 canes. I have also a Caragana or Siberian 

 Pea Tree, received in 1894, and said to bear 

 yellow blossoms, but it has never blossomed. 

 The tree is now about five feet high. Also 

 the Kosteletzkya virginica, a flowering shrub, 

 said to blossom the first year from seed ; I 



have had it growing for four years, and it is 

 now about six feet high but no blossom has 

 appeared. It being a southern production, per- 

 haps the Canadian climate does not favor its 

 blossoming ; yet it apjiears to be hardy enough 

 to stand the cold of our winters if protected. 

 I have not seen it mentioned in any Canadian 

 catalogue. It issaid to be a genus described by 

 Linnieus, and long since lost, for many years 

 botanists searched for it. About six years ago 

 a writer in the Botanical Bulletin, again 

 called the attention of the botanical collectors 

 to it, suggesting it might be found in the 

 region of the original discovery. Acting upon 

 this suggestion, Mr. Frank L Bassett, made 

 a special journey to the locality, and after a 

 long and weary search, was rewarded for his 

 enterprise, toil and energy, by re-discovering 

 it. Perhaps some reader of the Canadian 

 HoRTiciJLTUKiST may be able to report better 

 success with it. I venture to suggest that 

 the Horticultural journal in the April number 

 of each year give some information for the 

 benefit of amateurs how to cultivate the 

 various plants and trees sent to subscribers, 

 with regard to soil, sunlight, shade, etc., for 

 I have known some persons who were in the 

 habit of watering all plants alike, giving the 

 same quantity to a cactus as to an oleander 

 and then wondering what was the matter 

 with the cactus. 



A. Williamson', 



Kingston. 



L. Woolveeton, M. A., Secretary Horti- 

 cultural Journal. 



In reply we would advise our corres- 

 pondent not to cut back Rosa rubifolia 

 as he does the hybrid perpetuals, as it 

 is not so vigorous a grower. Its habit 

 is rather that of the Sweet Briar, and its 

 bloom is single like the latter. This 

 rose is grown more on account of its red 

 foliage than for its flower which is not 

 conspicuous. 



The Caragana should begin blooming 

 now. On the 25th June we saw 

 specimens in bloom at Guelph, which 

 were probably not much older than the 

 tree mentioned by our correspondent. 



290 



