The Time for Planting 153 
planting seedlings raised in cold frames or hotbeds, pro- 
vided they are grown in berry boxes or dirt bands so 
that they can be set in the ground without injury to the 
root system (page 190). 
Warm-season crops of long growing periods. These 
are slow-growing vegetables, and in many of our northern 
states, if seeds are sown in the ground, the plants do not 
mature crops before the autumn frosts. The vegetables 
of this group, which should be grown from forced plants, 
are peppers, tomatoes, eggplants, and sweet potatoes. 
To grow good plants, suitable for transplanting, requires 
from 8 to 10 weeks, except the sweet potato, which re- 
quires only about 5 weeks. ‘Transplanting to the field 
is done after all danger of frost is past. 
Spring and summer crops in the South. The planting 
of warm-season vegetables in the South is regulated 
according to temperature quite as in the North, except 
that the planting is done at an earlier calendar date and 
the growing season is longer. Some of the warm-season 
vegetables like bush beans do not thrive during the 
Southern summer, and should begin to mature early. 
The pole beans, however, do well during the summer. 
Kentucky Wonder and Southern Prolific are good summer 
varieties. 
When seeds of the long-period warm-season vegetables 
(okra, peppers, and especially tomatoes) are sown in 
cool soil, even in the South, they usually fail to germi- 
nate; and if one waits until the ground is warm enough 
to plant out of doors before sowing such seed, the crop 
matures late. The early crops of these vegetables are 
secured by growing the plants under protection in hot- 
