June 2 ,2933 
Snow Molding in Coniferous Nursery Stock 
747 
Examinations showed that practically all age classes and species 
grown in this nursery, excepting lodgepole pine, are subject to this disease 
and that it is more prevalent among young seedlings (i-o and 2-0) than 
in the older age classes. Among older seedlings and transplants, the 
weak and previously injtnred trees are the ones generally attacked. 
The disease can be controlled eiffectively in the nursery by placing a 
protective framework over the bed so that the full weight of the snow 
does not lie heavily on the trees, and press them down flat on the ground. 
It is by far the best and most efiicient method of control which has been 
developed. 
