236 VEGETABLE FORCING 
poor seed may result in almost a total failure, because 
many of the plants may not produce heads at all, and 
those that do form are small and undesirable. Most of 
the cauliflower seed used in the United States is grown 
in Denmark and France. Much of this seed does very 
well under glass, but there is nearly always some concern 
as to whether the results will be wholly satisfactory. On 
account of the uncertainty of the crop when forced from 
imported seed, Shoemaker of the United States Depart- 
fF 
Fig. 82.—A typical head of greenhouse grown cauliflower. 
ment of Agriculture has been conducting experiments in 
growing seed in greenhouses. Small packets of the Goy- 
ernment seed have been supplied to various agricultural 
experiment stations as well as to practical growers, and 
the crops produced from this seed have been highly satis- 
factory. He believes that cauliflower seed which is to 
be used for forcing purposes should be grown under 
glass, and we are indebted to him for the following in- 
formation relating to the subject: 
“Tn brief, our method of culture in the greenhouse has been about 
as follows: We have found that we can make two crops of com- 
