Native Vegetation 
49 
imens are growing only in very isolated spots. Care should be 
exercised in the selection of sites for fruit growing along the 
upper limits of the pinyon pine-juniper zone. 
YELLOW PINE FOREST ZONE 
Distribution , and Vegetation .—The yellow pine forest com¬ 
munity belongs to the foothills in most sections of Colorado. On 
the eastern foothills from the Colorado-Wyoming line to the Pal¬ 
mer Lake Divide, yellow pine quite regularly comes in at about 
6,000 feet, and extends to 8,000 feet, where it meets the lodgepole 
Fig. 18.—Below Ouray; potatoes and grain on sagebrush land. Pin¬ 
yon pine and juniper on the slopes. 
pine forest. Often, its lowermost limit is on the mesas, meeting 
there the grassland of the Plains. Yellow pine extends eastward 
on the Arkansas-Platte Divide, 50 miles or more east of Castle 
Rock. The transition from grass-steppe to yellow pine on the 
east foothills of southern Colorado is made by pinyon pine and 
juniper. Yellow pine fringes the San Luis Valley, occurring above 
