CAULIFLOWER CELERY CRESS. 247 



lettuce-house temperature (page 145). Carrot is treated in 

 the same way, but is rarely forced for market. 



CAULIFLOWER. 



Cauliflower demands a low temperature (about 50 at 

 night and 10 to 15 degrees higher in the day), and a 

 solid bed (page in). 



Four to five months from the seed are required in 

 which to get marketable heads. The plants should be 

 transplanted at least once before they are set in their 

 permanent quarters. They should be planted about 16 

 inches apart each way (pages in, 112). 



The plants must be kept growing uniformly, else the 

 heads will "button" (pages 109, 112, 113). 



The Snowball and Early Erfurt strains are good for 

 forcing (pages 112, 113, 114). 



The cauliflower may be troubled with aphis or green- 

 fly, but it has developed no other serious diseases or 

 difficulties under glass, unless possibly, in common with 

 all plants, a facility for damping-off (page in). 



Celery may be forced by starting the seed in fall or 

 very early winter, and holding the plants back until 

 spring. Early in March (or in February), the plants are 

 put in solid beds (in a lettuce or carnation house) 8 to 10 

 inches apart, and they are then set into rapid growth. 

 The plants are bleached by tying them up in stiff, hard 

 paper (page 139). 



Water-cress grows readily on moist ground under- 

 neath benches in a cool or intermediate house (page 141). 



Garden cress may be grown in beds or on benches 

 which are suited to the raising of lettuce. The seeds are 

 commonly sown where the plants are to stand (page 142). 



