420 



ARID AGRICULTURE. 



KIND OF 

 TREES TO 



PLANT 



water gives a supply of ice that is convenient, 

 mulching by placing lumps of ice around the 

 tree has given most excellent results. This ice 

 keeps the tree dormant, in a measure preventing 

 the swelling of the buds too early in the spring, 

 as well as keeping the soil from drying out. 

 Some Northern fruit growers are practicing 

 using the ice mulch and testify to its efficiency. 



The list of trees for general planting is a 

 short one. In favorable locations and with pro- 

 tection a large variety of trees succeed. In 

 towns and cities where there is protection af- 

 forded by many buildings, where the water sup- 

 ply is always available and the grower can give 

 much attention to his trees, practically all the 

 varieties that grow in like latitudes elsewhere 

 will thrive. A good example of this may be 

 cited in the trees of Denver, where the long list 

 of varieties includes everything from the oak, 

 linden, chestnut, walnut, horse-chestnut, etc., 

 down to the ever-present and most hardy cotton- 

 wood. 



DROUTH- 

 RESISTANT 



As yet few trees have been inured to drouth. 

 In the warmer parts of California the Eucalyp- 

 tus thrives with little summer moisture. For 

 the colder mountain and great basin regions the 

 trees which will grow with least moisture are 

 the common Pine, Englemann's Spruce, Xorway 



