Systematic Street Tree Planting. 23 



loss of enormous quantities of trees through epidemics of 

 insect attack and fungus disease which are breaking out 

 from time to time in various sections of the country. 



Several Years of Growth are Necessary for Good Sorts of 

 Trees to Make a Good Display. 



Depending upon the variety selected and the existent 

 growing conditions, from 5 to 15 years are required for the 

 best sorts of shade trees to develop a size sufficient to be of 

 noticeable value. Consequently considerable stimulation is 

 advisable to encourage the planting of street trees early in 

 the development of streets. Quantities of long-lived 

 varieties of trees are needed to replace the short-lived, 

 quick-growing kinds that have been planted very generally 

 throughout the country. The renewal of plantations is be- 

 coming necessary in every town and city because street trees 

 are an unquestioned public asset. 



While it is possible to preserve somewhat the life of 

 decaying street trees by sensible tree repair, it is fully as 

 good practice to plant new trees especially when the repairs 

 can bring only temporary results. 



THE PROCEDURE FOR SUCCESSFUL RESULTS IN 

 TREE PLANTING. 



REQUIREMENTS FOR THE NORMAL GROWTH OF 

 STREET TREES. 



Trees repay bountifully any amount of intelligent care 

 exercised at the time of planting in making provisions for 

 their requirements for growth. No one should expect 

 healthy and attractive shade trees by simply setting out any 

 sort of tree into soil just as it is found. In order to insure 

 a luxuriant growth a street tree must be provided with a 

 congenial soil condition, favorable surroundings and ade- 

 quate protection against damage. The soil underneath the 

 surface of and adjacent to streets is very much different 

 from that found in gardens and woodlands. The grading 

 which has been done in establishing useful streets has either 



