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 to to 15 degrees higher in the day), and a 
solid bed (page 111). 
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 III, II2). 
The plants must be kept growing uniformly, else the 
heads will ‘‘button’’ (pages 109, II2, I13). 
The Snowball and Early Erfurt strains are good for 
forcing (pages I12, I13, 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 111). 
CELERY. 
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 Io 
inches apart, and they are then set into rapid growth. 
The plants are bleached by tying them up in stiff, hard 
paper (page 139). 
CRESS. 
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). 
