FLOWERS _.. 187 
good way is to spray onto the roof a mixture of 
lime-water, about as thick as milk, or white lead and 
naphtha in solution. 
As soon as they are well established and growing, 
decision must be made as to how they are to be 
grown. If more than one flower to a plant is 
wanted, pinch out the big top bud and as the side 
buds develop, take them all off to the number of 
flowers required, two, three or more as the case 
may be. If sprays are wanted, pinch out the end 
buds of these side shoots also when they get about 
three inches long, and all but a few of the side buds 
on the shoots. 
If at any time during growth the plants seem to 
be checked, or lose their healthy dark green color, 
it is probable that they are not getting enough food 
and should be given top dressings or liquid manure 
accordingly. 
Or if one does not want to devote space in the 
greenhouse to them for so long a time (although 
they occupy it when there is little other use for it) 
the plants may be grown in pots, the final shift be- 
ing into six- or seven-inch. They are kept in a 
cool house, or in a shaded place out-of-doors, 
plunged in coal ashes. One advantage of this 
method is, of course, that they can be brought into 
the dwelling house while in bloom. 
In either case, the plants must be watched care- 
fully for black fly, which can be kept off with 
