96 SHADE-TREES IN TOWNS AND CITIES 



GUARDING 



The combination support and tree-guard used in the city 

 of Washington has already been spoken of. While rather 

 clumsy, these guards are very efficient, and remain around 

 the trees for eight or nine years. Some forms of iron 

 guards are used in other cities, which are rather expensive. 

 Unless a tree is exposed to continuous and severe injury a 

 cheaper form of wire guard will be found just as service- 

 able, especially on residential streets. 



There are many tree-guards on the market with which 

 trees can be protected. A good economical guard for young 

 trees has been adopted by the East Orange Shade-Tree Com- 

 mission. It is made of No. 16, one-half inch square wire 

 mesh, coming in rolls twenty inches wide. It is cut into 

 six-foot lengths, and these are rolled by means of a machine 

 into cylinders. A good guard for trees of any size is made 

 of hexagonal wire netting six or seven feet high. In the 

 case of larger guards the width of the wire cloth ordered 

 should be the same as the required height of the guard. 

 The amount of wire cut off from the roll will depend upon 

 the diameter of each tree protected. 



GRILLS 



Grills are used around the base of trees along streets 

 to prevent the soil from being tramped on by pedestrians. 

 They are especially needed on sidewalks covered with 

 concrete or other material impervious to air and moisture, 

 and where every available bit of room is necessary for the 

 public use of the street. 



They are circular, hexagonal, or rectangular in form, 

 and are made of cast-iron sections set together around the 



