CULTURAL DIRECTIONS 
305 
Winter Queen is another popular, largely grown late 
variety. It does not attain as great a height as Giant 
Pascal, and is more convenient to store. 
French Success is a stocky, compact winter variety 
of excellent keeping qualities. 
Boston Market, a low, dwarf-growing variety, is espe- 
cially popular in Bqston. When thoroughly blanched 
with soil the stalks are extremely tender and delicious 
in flavor. No variety excels it in quality. 
Newark Market, Emperor, and Sanford Superb are 
excellent varieties that are popular with many growers. 
400. Climatic requirements. — Celery is grown success- 
fully in all parts of the United States. Certain climatic 
conditions, however, are known to be especially favor- 
able for its most successful culture. Low humidity, 
plenty of sunshine, considerable warmth during the day 
and cool nights provide ideal conditions. Diseases are 
less troublesome when the air is dry, and a rapid but 
strong, healthy growth is encouraged by sunshine and 
relatively high, dry temperatures. Cool nights make the 
stems firm and crisp. Most northern sections provide 
excellent conditions during summer and fall, while 
some parts of the South, especially Florida, possess the 
proper climatic conditions for winter culture. 
Although celery is one of our hardy vegetables, it will 
not stand severe freezing without sustaining injuries. 
The young plants are likely to be checked in growth 
by hard spring frosts which probably cause them to pro- 
duce seed stalks. The matured plants are often damaged 
or killed by severe freezing. Vigorous plants will gen- 
erally stand a drop of seven degrees below freezing, 
although this will impair the keeping quality. A liberal 
rainfall, well distributed during the growing season is 
necessary unless irrigation is possible. 
401. Soils. — The great commercial plantations of cel- 
ery in the states bordering on the Great Lakes, in Cali- 
