JANUARY. 13 



should be set in a cold shady pit, and the sun kept from them, other- 

 wise they will bloom before that time ; but by attending to this you 

 may keep many of the kinds in perfection until July, which I have 

 done myself, and exhibited them at Chiswick in that month. As 

 soon as they are out of flower, either early or late plants, remove 

 them again into their place of growth (same as recommended before), 

 and treat them in a similar manner. By such attention your exer- 

 tions and trouble will be crowned with success. 



One thing in connexion with their culture is, that they are very 

 subject to black thrips ; and if not properly attended to, these pests 

 will ultimately destroy your plants. You can easily discover when 

 they are establishing themselves by the leaves turning brown and 

 spotted, and as soon as this is perceptible, fumigate, which is the only 

 safe cure. I have heard several contend that it is not ; but I am afraid 

 these have been led away by supposition ; and have not paid proper 

 attention to the matter. I have seen plants completely covered with 

 them ; and by fumigating them with good strong tobacco, following 

 it up for three or four times, and allowing two or three nights to 

 intervene between each smoking, every insect has been destroyed. 

 I have no doubt that some have failed to rid their plants of the 

 thrips ; but this has happened because they have not followed up the 

 fumigations, for there are upon one plant no less than five distinct 

 generations : those that have arrived at maturity strong tobacco- 

 smoke will most assuredly destroy, while others only just deposited in 

 the shape of eggs will not be harmed but by continuing the smoking, 

 and, as I said before, allowing two or three days to intervene, you will 

 destroy them as soon as they come to life, and before they are able 

 to deposit more eggs for another progeny. 



At some future time, I will give the plan I have adopted for many 

 years of grafting the weak-growing varieties of Azaleas upon strong 

 robust stocks, and how to make a large plant in two years fit for 

 shewing at any exhibition ; also some account of my successful 

 results upon their hybridisation, the most interesting part of all. 



The folio wins; are a few of the finest Azaleas in cultivation : . 



Alba magna. 



Alba striata. 



Aurora. 



Beauty of Reigate. 



Bianca. 



Broughtonii. 



Carminata. 



Coccinea superba. 



Conqueror. 



Coronata. 



Delecta. 



Double Red. 



Duke of Devonshire. 



Exquisite. 



Gledstanesii. 



excelsa. 



Holfordii. 



Iveryana. 



Juliana. 



Lateritia. 



Lawrenceana. 



Murryana. 



Optima. 



Perry ana. 



Prsestantissima. 



Refulgens. 



Rosea superba, 



Symmetry. 



Triumphans. 



Variegata. 



Vesta. 



Vivicans. 



Camden Nvrsery, Camberwell. W. Barnes. 



