TREATMENT OF CAULIFLOWER. 113 
of Ithaca is excessively cloudy, and that the forcing 
of plants presents special difficulties here. 
An attempt was now made to keep the plants in a 
uniform but not exuberant state of vigor to prevent the 
heads from buttoning. The crop held up well, and on 
the 1st of May, when the experiment closed, there were 
many merchantable heads unsold. Ninety per cent of the 
plants made good heads, which is a very large propor- 
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37. A head of winter caulifiower. 
tion, even for the best field culture. In this crop, the 
heads were allowed to attain a larger size than in the 
midwinter crop, the average diameter being about 6 
inches. A good head of Snowball is shown in Fig. 37. 
It is rarely necessary to bleach the heads, as is done 
in field culture. Late in the season, in April, it may be 
necessary to break a leaf down over a head now and 
then to protect it from too hot sun, but ordinarily the 
heads will be perfectly white under glass, when full 
