MISCELLANEOUS VEGETABLES 



361 



\ 



Fig. 127. Chinese cabbage. 



which, with rather copious watering after that period, 

 would prevent the breaking down of the tips of the 

 leaves. 



According to experiments made by Hepler at the 

 University of Wisconsin, 12 to 16 weeks are required to 

 grow Chinese cabbage to marketable size. It is possible 

 that special strains of this interesting salad plant could 

 be developed which would thrive well under glass. The 

 trouble is that Pe Tsai was never accustomed to green- 

 houses in old China. 



CRESS 



Water cress (Nasturtium officinale) is one of the easiest 

 crops to grow in the greenhouse. A small planting of it 

 is always desirable in private establishments, and com- 

 mercial places, which are located near markets that are 



