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When we begin to have our trees uniformly throughout our towns, one other 

 festure will rise to importance. That ie, - the use of grills in the down down 

 district. A grill is a cast iron screen of some kind which is put over the soil 

 about the base of a tree to prevent its being packed down by tramping. Every 

 tree must have a certain area of unpoved soil about its base or it cannot live and 

 thrive. And in those prts of the town where there is a great amount of walking 

 too and fro the ground becomes packed down so that it is no longer easily permeated 

 by air and water. In this state the tree cannot thrive. It is to prevent this 

 that the grill is useful. These grills are, at best, an item of considerable 

 expense, but they are a means to an end which is worth far more than any expense 

 at first hand. Fig. shows the appearance of a grill from the surface 



and in section. 



Sub sequent c are . All trees, of course, receive a thorough watering at the 

 time of their planting but there must be systematic watering after that. It has 

 been found thet it does not pay to leave watering to theindividual property owners. 

 At best they are prone to forget and if the trees will show difference of treat- 

 ment, there will be irregularity in the plfmting which will mar the whole effect. 



To prevent this it is desirable to have the watering done by the city. If 

 the city takes charge the expense is kept down and a systematic treatment is assured 

 During the first three yeors of the tree's life on the streets it must be watered 

 with the greatest care. After its first watering, it is usually watered every 

 two or three weeks during the summer until the winter rains begin. The second 

 year once a month will suffice and in some cases, every other month. The third 

 season ie usually confined to helping along the backward trees with water for the 

 others if necessary. Palms very often need it during a third season. Backward 

 trees and trees y/hich show irregular growth, ae camphor or live oak, must have more 

 frequent and more copious waterings than the normal specimens or more even growing 

 species. Also, trees in situations which are more exposed or which are in soil 

 which does not retain its soil moisture freely, need special attention. 



