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PARKS 



red fescue. With little or no irrigation, mesquite with 

 Bermuda grass at the lower altitudes in the West. 



Region 5. With copious watering, Kentucky blue 

 grass, redtop, mesquite grass, creeping and other bents. 

 For shade, Kentucky blue grass and red fescue. With 

 less watering, Bermuda grass and with little watering, 

 Lippia canescens. 



Region 6. With watering, Kentucky blue grass, red- 

 top, creeping and other bents. For shade, Kentucky 

 blue grass and red fescue. 



Region 7. With frequent watering, Kentucky blue 

 grass, redtop, creeping and other bents, and mesquite 

 grass. For shade, Kentucky blue grass and red fescue. 



Region 8. With much watering, Kentucky blue grass, 

 redtop, creeping bent and other bents. For shade, Ken- 

 tucky blue grass, red fescue. 



Region 9. With copious watering, Kentucky blue 

 grass, creeping bent, redtop, mesquite grass. For shade, 

 Kentucky blue grass, red fescue. 



Region lo. With very heavy watering, Kentucky 

 blue grass, redtop, creeping bent. For shade, Ken- 

 tucky blue grass, red fescue. With less watering, 

 Bermuda grass and Lippia canescens. 



Region if. With copious watering, Kentucky blue 

 grass, redtop, creeping bent. For shade, Kentucky 

 blue grass, red fescue. 



Region 12. With frequent watering, Kentucky b'ue 

 grass, redtop, creeping bent. For shade, Kentucky 

 blue grass, red fescue. 



Region 13. With frequent watering, Kentucky blue 

 grass, redtop, creeping bent. For shade, Kentucky 

 blue grass, red fescue. 



Region 14. With frequent watering, Kentucky blue 

 grass, creeping bent, redtop. For shade, Kentucky 

 blue grass, red fescue. 



Region 15. With abundant watering, Kentucky blue 

 grass, redtop, mesquite, creeping bent. For shade, Ken- 

 tucky blue grass, red fescue. 



Region 16. With abundant watering, Kentucky blue 

 grass, redtop, creeping bent. For shade, Kentucky 

 blue grass and red fescue. With somewhat less water, 

 mesquite, Buffalo grass, Bermuda grass. 



Region //. With very copious watering, Kentucky 

 blue grass, creeping bent, redtop. For shade, Ken- 

 tucky blue grass, red fescue. With somewhat less water, 



Bermuda grass, centipede grass, St. Augustine grass. 

 For shade, carpet grass. 



Region 18. With abundant watering, Kentucky blue 

 grass, redtop, mesquite grass, creeping bent, German 

 bent. For shade, Kentucky blue grass and red fescue. 



Region 19. With abundant water, Kentucky blue 

 grass, mesquite grass, creeping bent, redtop. For shade, 

 Kentucky blue grass and red fescue. 



Region 20. With abundant water, Kentucky blue 

 grass, mesquite grass, creeping bent, redtop. For shade, 

 Kentucky blue grass, red fescue. With somewhat less 

 water, Bermuda grass, carpet grass and other native 

 grasses. For shade, carpet grass. 



Region 21. With water for frequent droughts use 

 Kentucky blue grass, redtop, mesquite and other native 

 grasses and creeping bent. For shade, Kentucky blue 

 grass and red fescue. 



Region 22. With water for droughts use Kentucky 

 blue grass, mesquite, creeping bent, redtop. For shade, 

 Kentucky blue grass, red fescue. 



Region 23. With water for occasional droughts, Ken- 

 tucky blue grass, redtop, creeping bent. For shade, 

 Kentucky blue grass, red fescue. 



Region 24. Kentucky blue grass, redtop, creeping 

 bent. For shade, Kentucky blue grass, red fescue. 



Region 25. Kentucky blue grass, creeping bent, red- 

 top. For shade, Kentucky blue grass, red fescue. 



Region 26. Kentucky blue grass, redtop, creeping 

 bent. For shade, Kentucky blue grass, red fescue. 



Region 27. Kentucky blue grass, redtop, creeping 

 bent. For shade, Kentucky blue grass, red fescue. 



Region 28. Creeping bent, redtop. For shade, Ken- 

 tucky blue grass, red fescue. 



Region 29. Bermuda grass, with perennial rye or 

 white clover added each fall to make a green winter 

 lawn, carpet grass, creeping bent. For shade, Kentucky 

 blue grass, carpet grass, red fescue. 



Region 30. Carpet grass, St. Augustine grass, Ber- 

 muda grass, with perennial rye or white clover for 

 winter, centipede grass, Bahia, Lippia canescens in dry 

 situations. For shade, carpet grass. 



Region 31. Carpet grass, St. Augustine grass, Ber- 

 muda grass, centipede grass, Bahia, Lippia canescens 

 for dry situations. For shade, carpet grass. 



Region 32. St. Augustine grass, carpet grass, Ber- 

 muda grass, centipede grass, Bahia. For shade, carpet 

 grass. 



SECTION III. DISEASES OF PARK TREES AND SHRUBS 



DR. HAVEN METCALF 



Senior Pathologist in Charge, Bureau of Plant Industry, United States Department of Agriculture, 



Washington, D. C. 



Trees in forest parks are subject to the same diseases as forest trees. 

 Forest trees have numerous leaf, twig, trunk, and root diseases, varying in 

 severity from leaf spots, which only slow up the rate of growth, to such kill- 

 ing diseases as chestnut blight. The control of some of these diseases, such 

 as white-pine blister rust, is comparatively simple, but for many others 

 there is no practical method of control. Root diseases, which are the cause 

 of a large part of the loss of trees by wind throw, are especially difficult 

 to control. Closely related to root diseases and often caused by the same 

 organisms are diseases that directly produce decay in the tree trunks. This 



