

AMERICAN FORESTRY 



cutting back. Wood soft, 



.lid limbs or tops frequently 



broken in si Surface roots raise 



and crack concrete walks, 



the thick trunks push curb stones 



Fine rootlets clog drains, 



fall during summer. Short-lived. 



male Cottonwood objection- 



abl 



Maple. Grows rapidly, but is 

 slim d, and has brittle weak 



branches which break easily in storms. 

 It is hard to prune and is affected by 

 cl pests and fungus diseases. 

 1 / ( i pie. Resembles the Nor- 

 way Maple in habit of growth, but 

 - desirable, and is subject to borers. 

 Boa Elder. Grows rapidly and under 

 ad conditions, but has a scraggy 



crown, branches easily broken, and 

 twigs die readily; it is badly infested by 

 insects, and the leaves start falling in 

 liner. 



Male Ailanthus. The staminate or 

 male flowers of Ailanthus produce a 

 Strong and highly disagreeable odor. 

 This can be avoided by planting the 

 female form of the tree. 



italpa. Common catalpa forms a 

 sn "i" ed trunk, and an irregular 



head. Not at all suited for street 

 plantin 



Hardy ( 'atalpa is straight and with a 



U-formed crown, but requires good 



I. Both species subject to enemies 



and are better as ornamental trees. 



Horse Chestnut. -Leaves discolor, 



'el , ( ,id fall in early summer. Sub- 



3 of many insects and fungi. 



mifers Are highly decorative 



ns and parks, but thev cannot 



dusty atmosphere, and 



the removal of the lower branches 



trees. 



[HER THAN STREET PLANTING 



'inds and parks A 

 may be used 

 native to the region or to 



row if 



e conditio] i m ilar 



qua! by a change of soil 



uld be selected for its 



il and mois- 



"'1 for its suitability 



the particular 



purpose for which it is desired orna- 

 ment, shade, protection, screen, etc. 

 Time is well spent in observing the 

 growth of the native and planted trees 

 of the region. 



Roadside trees. All of the trees listed 

 for street planting and many of those 

 named for private grounds may be used. 

 The selection of species and the spacing- 

 should be governed by the soil and local 

 conditions, but care should be taken 

 that the shading of roadway and 

 adjoining property will not be detri- 

 mental. 



GENERAL INFORMATION 



Trees prejerring wet soil. Pin oak, 

 Bald cypress, Oriental sycamore, Swamp 

 white oak, Willow oak, Sweet gum, Red 

 maple, White birch, Black ash, Tama- 

 rack, Willows and poplars. 



Tall trees with large spreading crowns. 

 American elm, Tulip tree, Red oak, 

 American sycamore, Honey locust, 

 White oak, Horse chestnut, White ash,' 

 Black walnut. 



Trees with narrow pyramidal crowns. 

 Ginkgo, Bald cypress, European larch, 

 Norway spruce, Colorado blue spruce, 

 Arbor vitae, Red cedar, Red fir, Hem- 

 lock, Lombardy poplar. 



Trees with very large leaves. Catalpa, 

 Paulonia, Ailanthus, Great flowered 

 magnolia, Cucumber tree, Kentucky 

 coffee tree, Black walnut, Hercules club. 



Trees with narrow or finely cut leaves. 

 Honey locust, Bald cypress, European 

 larch, Willow oak, Black cherry, Su- 

 mach, cut-leaved varieties of many other 

 species and most conifers. 



Broad - leaved evergreens. American 

 holly, Great flowered magnolia, Swamp 

 magnolia, Rhododendron, Mountain 

 laurel. 



Trees with fragrant flowers. Swamp 

 magnolia, Lindens (American and Euro- 

 pean), Black locust, Honey locust, 

 Yellowwood, Wild crab apple Wild 

 plum, Cherries, Hawthorns, June berry. 



trees ^ with showy white flowers 

 (Blooming before the leaves) .Flower- 

 ing dogwood June berry.Plums, Cherries 

 (blooming after the leaves) ; Catalpa, 

 Horse chestnut, Buckeye, Magnolias, 

 rood, Yellow-wood, Black locust, 

 Hercules club, Mountain ash, Rhodo- 





