6 
The Colorado Experiment Station 
Figure 3. 
occurred a severe freeze, and practically every new cane was seri¬ 
ously injured, if not killed outright. The growing tips were black¬ 
ened and the canes were shriveled for a distance of one-half to 
three inches below this. When they were split lengthwise, the pith 
was found to be blackened at the tip, browned further down to 
within two or three inches of the ground, below which it was white 
and normal to all appearances. 
As soon as favorable weather conditions return, one of two 
things usually happens: The frozen canes either make no further 
growth and the roots send up a new crop of suckers, or they sprout 
out from below the frozen tips and develop a forked cane consist¬ 
ing of two or more spindling shoots in place of one good, substan¬ 
tial cane. Such branched canes are usually undesirable, and if 
single ones can be obtained, even though of a later origin, their 
growth should be encouraged. Large, thrifty canes mean hand¬ 
some returns in berries, while the inferior ones yield nothing but 
disappointment. 
Many growers make the serious mistake of allowing too many 
canes to develop in the spring. Dr. Sandsten, our horticulturist, 
recommends that, “each plant or hill should not be allowed to grow 
