UNITED STATES DEPARTMENT OF AGRICULTURE 
Contribution from the Bureau of Plant Industry 
WM. A. TAYLOR, Chief 
Washington, D. C. Vv January 19, 1920 
STREET TREES. 
By F. L. Mutrorp, Horticulturist, Office of Horticultural and Pomological 
Investigations. 
CONTENTS. 
Page Page 
Importance of shade trees.........-..-------- {| Culturerof street: treesscecee = -eeaecase eee es 43 
Public control of street trees...........------ 6 Selection of individual trees.............- 43 
Planning for trees on city streets........----- 8 Benes ee of holes..............--.---- ae 
ee er is 
posers for tree growth. veceeeeesees ec esse 10 Sano carrdsetne eee BI 
Kinds of trees suitable for city streets.......- 14 AEG CASG ese a ee 52 
Qualities necessary ....----------------- 14 @arcroimailunextteesenaeeeee nooo 53 
Mreesitor difterent; regionss-- 2-22. 22-5. 16 PE UINITI OCs oe ea er ee eee 53 
Trees for special purposes..........------ 20 Weeding | Goes aneee aon ue aCe 55 
Descriptions of street trees..-..... Soa eee eae 20 Spraying. 322.0 eee ose eee aoc 55 
IMPORTANCE OF SHADE TREES. 
HE COMFORT to be derived from shade trees has long been 
recognized. The early settlers of this country saved fine 
trees about their homes, on the village greens, along the country 
roads, and in the fields. Later, as villages grew, the householders 
planted trees adjoining their properties, and the result has been 
the beautiful elm-shaded villages of New England, the maple-shaded 
towns of New York and the Ohio Valley, and the oak-shaded streets 
of the Southeastern States. (Fig. 1.) 
With time, the villages and towns became cities, and the wood- 
lands were largely destroyed. Conditions for tree growth were 
less favorable in the cities, and nurseries had to be depended upon 
for planting material. With these changed conditions the native 
trees of a region became less dominant in the city planting and were 
largely replaced by those trees listed in nursery catalogues which 
took the fancy of each property owner along the street. (Fig. 2.) 
The quickest growing trees were considered first, and as some of these 
made a big showing the first few years and were easily transplanted, 
they have become the dominating trees in street planting from the 
137389°—19—Bull. 816——1 
