PRUNING, 



109 



good watering should keep the ground moist for two or three 

 weeks in the driest weather we have if the land is heavily 

 mulched when the water is applied. For a good-watering in 

 a dry time about one barrel of water should be given to each 

 street or lawn tree. A hollow should be made around the tree 

 aud covered with mulch before the water is applied. This 

 same amount of water might be applied at the rate of one or 

 two pailfuls a day and not be of the least benefit to the tree, 

 if applied to the bare surface of the ground. 



Fig. 21. Soft Maple Fig. 22. Soft Maple ~* F Fig. 23. Soft Maple 



not pruned since it was once pruned showing 'several times pruned 



Elanted out. Liable to close head that is not preserving a main cen- 



reak in its crotches at liable to break down._tral axis. A good form, 



any time. A bad form. A good form. 



The Pruning of Street Trees at the time they are set out is_an 

 important matter. If the trees are very -tall and slender it is 

 a good plan to cut them off at about 10 feet from the ground 

 and trim off all side branches as shown in -figure] 24. For 

 trees that have been pulled from the woods, this is generally 

 the best treatment, while for nursery grown trees thathavehad 

 plenty of room to develop a good top it may sometimes be 

 best to trim so as to leave part of the top. If the trees are 

 trimmed to bare poles before planting some little pruning will 

 be required each season for a number of years to develop 

 good tops while if they had well formed^tops in the nursery 

 and were shortened back at planting time-much less attention 

 will be necessary. 



