APPENDIX. 175 



The peculiar advantage of this application is, that it does not injure the blossoms which have 

 opened. 

 I pay One Shilling per pound for the quassia chips. — An Amateur Subscriber. 



The Rose-grub — This perhaps is the worst enemy the Rose has to contend with, and the 

 mode of dealing with it is not generally understood. The moth, of which it is the larva, lays 

 its eggs either on the pith exposed by pruning, or at the base of dormant eyes. To destroy it, 

 when pruning, cover the tops of the shoots laid bare by pruning the year before with the com- 

 position recommended for grafting : search the eyes closely, also, at the time they are swelling, 

 and you will pick up many depredators, skulking about, waiting for an opportunity to enter the 

 buds. This attention in spring and autumn will save many flower-buds from destruction. — 8. 



Longevity of the Dog-rose — In a work by M. Deslongchamps (La Rose, &c.) the author 

 mentions having known a plant of the Dog-rose for 30 years, on which was counted, in 1814, 120 

 concentric layers: consequently this tree must at the present time be more than 150 years old, 

 although the stem is not more than 3 inches in diameter. — A. 



Grafting the Rose — I would suggest a mode of grafting the Rose, which I have found to 

 answer well, and which I have not noticed anywhere. I make vertical incisions in the bark of 

 a young stock, two, three, or even four in a horizontal line, and insert a bud with the wood in 

 each. I then bind all round with one yarn. The head is thus formed without projecting 

 branches, and three or four sorts emanate from the same spot. — T. H. 



Green centres in Roses — I think you will agree with me that the causes of the tendency of 

 many Roses to give bunches of leaves instead of flowers, in short, to become viviparous, should 

 be better known than at present they seem to be. Complaints upon complaints are forwarded 

 every year to the Gardening Periodicals ; and I confess that I think the answers in some 

 instances are far from being satisfactory. Sudden changes of weather, wet after a duration of 

 dry weather, or hot forcing weather after much rain, have been generally assigned. Now, we 

 are always subject to these changes of weather in this variable climate, and should be prepared 

 to counteract their effects. 



Some seven years ago, on my first essay as a Rose cultivator, I laboured under the delusion, 

 that if the plants were induced to grow vigorously I must have in time fine flowers. I obtained 

 about 100 varieties of the best Roses then known, and set to work. At the bottom of each hole 

 I threw in a good shovelful of fresh cow manure, then some strong soil mixed with an equal 

 quantity of hot-bed manure : on this the Rose was planted, the hole filled up with more pre- 

 pared soil, and the whole topped up with another good large shovelful of the same fresh cow 

 manure. All were similarly treated. Oh, how they did grow that summer ! Eight or ten of 

 the most vigorous Hybrid Chinas (Brennus, &c.) did not give any flower-buds at all. The rest 

 did. But when I expected to have seen flowers, nothing but ugly green clusters of leaves made 

 their appearance. Of course, like others in distress, I complained of them to the " Gardeners' 

 Chronicle." 



The reply accused me of having given them too much manure, and that in too fresh a state. 

 It was impossible to have received a better answer. Most assuredly that was the true reason. 

 I have acted upon this ever since with perfect success. Every Rose that exhibits the slightest 

 tendency to produce green centres has a mark placed against its name ; and when the manuring 

 time comes round, I either cut off the supplies altogether for the year, and content myself with 

 giving the soil around the roots two good soakings with weak liquid manure, — the first, when the 

 young shoots begin to appear, the second when the flowers are on the point of opening, — or else 

 I remove some of the soil around the roots, and apply fresh. Should any manure be considered 

 necessary, a portion of old cow manure, turned to soil, is given. Having added every year at 

 least fifty fresh Roses to my stock, all the best varieties of every class have come under my notice, 

 and this treatment has almost invariably succeeded. Madame Hardy and De Neuilly will flower 



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