14 



THE COMPLETE HOME LANDSCAPE 



All rubbish and large 

 stones should be taken away, 

 then, when the subsoil is 

 graded, the topsoil can be 

 spread. It is a good idea 

 to excavate a little (about 

 eighteen inches) in the plant- 

 ing areas and fill in with 

 good soil. The matter of 

 fertilizing and improving 

 soils is discussed under "Lawn 

 Making" (page 18). Some- 

 times when the revised grade 

 is considerably above the 

 old surface, it is desirable 

 to save an old tree, too large 

 for transplanting. This can 

 be accomphshed by building 

 a "well" of bricks or large 

 stones around the base to 

 allow for circulation of air 

 (Fig. 11). When the new 

 grade is below the old, gently 

 mound up the soil above the 

 roots of the tree for a good distance from the trunk (Fig. 10). 



Fig. 10.— If, in grading, the general level is 

 lowered where valuable trees stand, gentle 

 mounds should be left around and over the 

 roots of such specimens as shown here in 

 cross section 



