20 



CIRCULAR NO. 119, BUREAU OF PLANT INDUSTRY, 



honey locust, Russian oleaster (fig. 4), Siberian pea tree, Black 

 Hills spruce, red cedar, and Scotch pine. Conditions in the spring 

 and summer of 1909 were very favorable to plant growth, and a good 

 stand of all the varieties was secured. Of the deciduous trees, all 

 varieties proved hardy except the black locust, which has winter- 

 killed very badly. 



Fig. 3.— Green ash grown without irrigation, three years from seedlings. The green ash has proved 

 very hardy and it is able to withstand severely dry weather. It is a valuable tree for both irrigated 

 and dry land in western South Dakota. 



The best varieties for dry land are Russian oleaster, green ash, 

 white elm, and Siberian pea tree. While the other varieties are hardy, 

 they require more water and appear to do well when irrigated. The 

 varieties recommended for dry land would do still better where they 



**te' 



v - 



Fig. 4.— Russian oleaster grown without irrigation, three years from seedlings. The oleaster is winter 

 hardy and withstands dry weather very well It is particularly valuable for windbreaks and orna- 

 ment a: hedges. 



could be irrigated. The 



evergreens 



have not done so well as the 



deciduous trees, and it is rather doubtful whether they can be grown 

 with much success until they have some protection from other trees. 

 In 1911 a bed of Scotch pine and Austrian pine was started, and a 

 good stand was obtained. In 1912 these seedlings were transplanted 

 to a frame covered by one-fourth shade. Nearly a perfect stand was 

 secured, but the plants made very little growth. After another 



[Cir. 119] 



