76 ARBOR DAY. 



three trees should be in line. 3. To leave as much of the 

 lawn unbroken as possible, the trees should be grouped 

 together in clumps, and not close enough to overshadow 

 buildings when grown. 4. Evergreens and shrubs should 

 also be grouped, and can fill up the angles or curves in 

 walks. 



PLANTING. For permanence, small growing trees 

 should be planted twenty feet apart, large growing trees 

 like the elm, thirty-five or forty feet. The holes in which 

 to plant the trees should be large enough to admit the 

 roots, and if the soil is stiff and clayey, should be made 

 still larger and deeper and filled up with fine surface soil. 

 The tree should be set in the hole and the soil carefully 

 worked round the roots and firmly pressed down with the 

 feet. A thick layer of straw or other mulch should be 

 placed around the tree for a space of at least five feet to 

 prevent drying out of the soil. If properly mulched, 

 watering will not often be necessary. The " little and 

 often" plan is a poor one. When water must be applied 

 give enough to saturate the roots and it will answer until 

 the surface soil is dry again. 



PROTECTION. In very dry summers the tall bare stems 

 of the trees are dried out, causing what is known as "sun 

 scald." To prevent this it is sometimes necessary to fasten 

 a V shaped trough on a six-inch board against the south- 

 west side of the tree for shade during the heat of the day. 



