PART II 



TREE LISTS FOR DIFFERENT REGIONS OF CALIFORNIA 



The following lists may be of assistance in jriaking selections of trees for 

 areas having similar growing conditions. They should be used, however, 

 with great caution because of the wide range of soil and climatic conditions 

 that exist. These conditions are so variable that it is not an easy matter to 

 judge how far given species may be suited. In using the lists given, considera- 

 tion must be given to the results shown by trees in the neighborhood where 

 it is proposed to plant the desired species. 



It is impossible to give lists that will hold for all' parts of California. 

 Detailed inquiry must be made in each case. The State Forester will be glad 

 to offer advice about the species of trees to select for various parts of the state. 

 In general, the following points may be used as guides in making selections. 



1 . Do not select species that need abundant soil moisture if the natural 

 water supply is slight. 



2. Plant only trees in an alkaline soil that will tolerate the amount of alkali 

 that may be present. 



3. Do not plant species characteristic of arid sections of the state in semi- 

 humid regions and do not plant those characteristic of humid regions in arid 

 sections. Use the native vegetation as a guide and plant only those trees that 

 will harmonize with it. 



No effort is being made to classify all the trees given in this publication 

 under the lists given since there are many exotics described concerning which 

 little is known. Chiefly those trees are given which have been well tried 

 out and which can be secured as a rule from nurserymen. 



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