THE GREEN-HOUSE. 



159 



On whatever sort of surface or situation the plants 

 are to be placed, they must not be crowded so as to 

 exclude the air, sun, and weather from their sides and 

 pots ; nor must they, as before observed, be tied at 

 the tops of their stems, but at a small distance above 

 their pots. The same general principles of arrange- 

 ment should be preserved, as in setting them on the 

 green-house stage. Each genus or natural family 

 ought to be kept together in all the groups, beds, or 

 other masses in which the plants may be set : the 

 tallest should be placed in the middle, and the slope 

 to the margin or margins should be free and irregular, 

 and not of that stiff shorn appearance before repro- 

 bated. 



The plants being thus established in their summer 

 situation, all that becomes necessary is to look over 

 them once a day to see that none are blown over, or 

 otherwise injured : — to observe and supply any that 

 may want water : — to examine the ball and drainage 

 of such as appear over-watered, and to take care that 

 they be sparingly supplied for the time to come. In 

 some pots worms may probably find their way ; and 

 they may either be killed Avhere they are, by watering 

 with lime-water, or the ball may be turned out of the 

 pot, and the worm, which will generally be found 

 outside of the ball, may be picked out by hand. Any 

 vermin that may appear on the leaves should be picked 

 off, or washed off by the syringe ; but in general the 

 small birds keep down the aphides and other insects 

 which attack these plants during the summer. All 



