ILLINOIS TREES: SELECTION, PLANTING. AND CARE 



83 



Fig. 77. — Mulberry 

 (white mulberry pic- 

 tured here) is useful 

 in ornamental plant- 

 ings where its messy 

 fruit is not objec- 

 tionable. It has vari- 

 able-shaped leaves 

 (insets) ; some are 

 without lobes while 

 others on the same 

 tree may have one 

 to five lobes. 



to a height of 20-30 feet with a branch spread of 30-40 feet. It 

 withstands dry conditions but is subject to winter injury. It is 

 hardy in Illinois and is recommended for trial planting. The dark 

 green, alternate leaves are entire to much-lobed and IV^-S inches 

 long. The flowers are similar to those of red mulberry. The dark 

 red or sometimes white fruits are about V^ inch long. This tree is 

 recommended for ornamental plantings because of its hardy 

 characteristics. 



Oak 



Oak is valued highly for shade and ornamental purposes in 

 lawn, parkway, and park plantings. In recent years many new 

 housing developments have been built in established oak plant- 

 ings and the trees are highly prized by the homeowners. How- 

 ever, oak trees frequently do not survive the injuries to which 

 they are subjected in the development of homesites. Injuries to 

 trunks and roots often result from soil excavations, grade 

 changes, and changing of water levels in the soil. 



All native species of oak except white {Quercus alba) and 

 swamp white (Q. hicolor) prefer an acid soil. Pin oak (Q. palus- 



