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The Colorado Experiment Station. 
on a commercial scale is beset by many difficulties and failures. The 
cultivation of the dewberry does not differ from that of the black¬ 
berries or red raspberries. Clean and thorough cultivation is es¬ 
sential to success. 
Pruning. —In the eastern states no pruning is done except the 
removal of the old fruiting canes after the harvest. In the west and 
on fertile soil the plants are apt to produce too many canes at the 
expense of fruit production, and pruning should be practiced. From 
ten to fourteen canes should be permitted to grow and fruit. All 
others should be cut out. The tips on the canes are not cut back. 
Winter protection is necessary the same as for the raspberries. 
A liberal application of well rotted barnyard manure is very bene¬ 
ficial to the plantation. 
Dewberries are not trained but permitted to spread on the 
ground. All attempts at training either on trellis or on stakes have 
proven failures. 
Varieties. —Only relatively few varieties are offered for sale 
and most of these are of uncertain value. Lucretia and Bartel are 
the two most reliable varEues and the former one is more exten¬ 
sively planted. 
Loganberry. 
The Loganberry should be classed as a dewberry, as it resem¬ 
bles the dewberry closer than any other of the brambles. It is a 
cross between the red raspberry and the western dewberry, Bubus 
vitifolius. It is grown quite extensively on the Pacific Coast and 
in the inland valley east of the coastal range of mountains. Where 
the soil and climatic conditions are favorable, it is prolific and a 
profitable crop. Its value for Colorado has not been sufficiently 
tested to warrant us to recommend planting on a commercial scale. 
Two or three commercial plantations are found on the western slope 
which appear to be a success. It is probable that with careful selec¬ 
tion of soil and site this may become an important industry. The 
fruit is on the average as large as the blackberry or larger. In 
shape, the fruit is decidedly oblong, individual fruits being often 
over two inches in length. The color is shining black and very at¬ 
tractive. In flavor, it approaches the red raspberry, but the quality 
is generally considered inferior. Like the dewberry and black 
raspberry they are propagated by tipping. 
Planting and Cultivation. —The cultural requirements are the 
same as for blackberries. The young plants are not robust and 
require careful cultivation and attention. The plants set in rows 
five by five or four by six feet are trained on trellis as raspberries. 
