VEGETABLE FORCING 47 



ments and the winter production of vegetables 

 as well. 



By this evolutionary movement the vegetable 

 forcing industry came into existence. From 

 a small beginning with crops which had been 

 grown in frames, such as lettuce and radishes, 

 the industry and the special varieties upon which 

 it is based have been developed. 



Since the beginning of the vegetable forcing 

 industry, transportation changes have made it 

 possible to profitably operate commercial vege- 

 table gardens and farms in the extreme south- 

 ern part of our country and successfully trans- 

 port the product to the cities of the North. In 

 the beginning the forcing house had no competi- 

 tion from this Southern field and even now there 

 is a trade which is willing to pay a slight pre- 

 mium for the forcing house product. The dif- 

 ference in price between the forcing house prod- 

 uct and the Southern product is not sufficient 

 either in amount or constancy to give the forc- 

 ing house crop a decided advantage. 



The art of growing vegetables under glass 

 has been perfected to a degree which permits 

 the Northern greenhouse grower to compete 

 sucessfully with the Southern fields. The home 

 grower has a slight advantage in special de- 

 livery and freshness and this together with the 



