Wyoming Experiment Station. 



suitable for windy situations than the tall, slender nursery 

 grown stock, but as to root system they are frequently seriously 

 deficient. Often one to three great roots only occur, and these 

 run out long distances before they branch and give rise to the 

 rootlets and root hairs. Therefore, in transplanting, the best 

 part of the root system is lost, and the tree dies for want of 

 water, since little water can be taken up by it till new rootlets 

 and root hairs (water absorbing organs) have been produced 

 upon the few large stumps of roots that were left upon it. 



On the other hand, nursery grown stock also has its ad- 

 vantages and disadvantages. In favor, it may be said, that 

 varieties may often be secured that have shown advantages in 

 vigor, in rapidity of growth, in freedom from disease, in beauty 

 of form or foliage. If they have been properly grown in the 

 nursery the root system is of the best. To secure this the 

 nurseryman transplants yearly, or at least cuts the roots, at 

 intervals of time, at a suitable distance from the trunk. This 

 insures a close, compact root system, the whole of which may be 

 transplanted, in consequence of which growth is soon re-estab- 

 lished. The disadvantages have already been stated and need 

 merely again be mentioned as original cost, heavy transportation 

 charges, exposure in shipment, and especially often great sea- 

 sonal differences between the location of the nursery and the 

 place to which the trees are transplanted. If grown in a low 

 altitude, they must be dug out and shipped before the season 

 in high altitudes is open. This makes it necessary to "heel 

 them in," causing some extra expense and additional dangers 

 to the tree. 



TIME TO PLANT. 



Everything considered, early spring seems to be the most 

 favorable time. Fall planting is sometimes advocated, but in 

 most parts of this State it cannot be done with safety, since 

 irrigation is usually wholly suspended during the winter 

 months, often for half a year. Should these months prove to be 



