130 



THE AMATEUE's GEEENHOUSE 



ally, and keep a sharp look-out for green-fly, which, if the 

 plants are allowed to sufier from the want of water, oi' kept 

 in a close stifling atmosphere, will soon become troublesome. 

 Tobacco smoke is one of the very best remedies, but some 

 degree of caution is necessary, because the tender foliage is 

 very susceptible of injury. 



Viola. — The greenhouse culture of Violets is extremely 

 simple, but it is jusc as easy to fail as to succeed. The best 



mode of obtaining a 

 supply of such hardy 

 kinds as the Bussian 

 and Neapolitan is to 

 hft the plants in Oc- 

 tober, and plant them 

 in turf pits or in 

 frames on a gentle 

 hotbed of leaves. The 

 lights should not be 

 put on until there 

 is apprehension of 

 frost, and they must 

 be kept regularly 

 watered and have air 

 at all favorable op- 

 portunities. A plan- 

 tation for the pur- 

 pose should be made 

 every year, in April, 

 by putting out young 

 rooted runners in 

 beds of rich sandy 

 loam, with which 

 plenty of charrirgs 

 from the smother heap have been mixed. The greeuhou?e 

 species, such as F. arlorea (the Tree Violet) , and V. hederacea (the 

 Ivy-leaved Violet), should be grown in rich sandy soil, and, after 

 flowering, should be put out of doors, in a shady place, until the 

 end of September. The double varieties of the Russian, such 

 as The Czar, The Queen, and others, make beautiful pot-plants 

 for the conservatory if planted out in April and potted up in 

 September, in the same way that bedding plants are treated. 



TEEE VIOLET. 



