24 



Since cottonwoods fall in the second group, and are easily grown 

 from cuttings, there need 'be little difficulty in getting trees that are 

 free from the objectionable " cotton." All that is necessary is to 

 propagate by cuttings from staminate individuals. A little observa- 

 tion will show which trees have no cotton, and cuttings can be made 

 from them the next season. 



SPECIES PLANTED. 



All of the trees in the list on page 23 have been planted more or 

 less widely in western Kansas, except wild China and the willows. 

 Other trees which have received some trial, though not very com- 

 monly planted, are bur oak, white poplar, Lombardy poplar, Rus- 

 sian olive, Chinese arborvita?, blue spruce, sycamore, and coffee- 

 tree. The number of species which have been tried is an indication of 

 the experience which the tree planting of thirty years has yielded. 

 With the information thus gained to draw on, the planter is now in 

 a position to avoid many past mistakes. 



USES OF DIFFERENT SPECIES. 

 UPLAND SPECIES. 



For upland planting under ordinary conditions, the trees which 

 have established their superiority are honey locust, Russian mulberry, 

 Osage orange, and red cedar. Next in hardiness to these, and of 

 good promise, are white elm, green ash, hackberry, Scotch pine, and 

 Austrian pine. 



VALLEY SPECIES. 



All upland species are excellent for valley planting as well. To 

 them may be added, in many localities, cottonwood, silver maple, box- 

 elder, black walnut, and hardy catalpa. Several other species not 

 suitable for general use may be grown in selected situations. 



HEDGE SPECIES. 



For hedges should be used, according to the style and purpose of 

 the hedge desired, honey locust, Osage orange, Russian mulberry, or 

 Russian olive. 



COMMERCIAL SPECIES. 



The best species to plant for posts and other timber are Osage 

 orange, black locust, Russian mulberry, and hardy catalpa. 



STREET SPECIES. 



For street and roadway planting the most suitable trees are honey 

 locust, green ash, white elm, and hackberry. 



[Cir. 161.] 



