SEP 21 1914 



Divisioa of Forestry 

 University of California 



Issued April 29, 1907. 



United States Department of Agriculture, 



FOREST SERVICE CIRCULAR 88. 

 GIFFORD PINCHOT, Forester. 



FOREST PLANTING LEAFLET. 



BLACK WALNUT (Juglans nigra). 



FORM AND SIZE. 



When grown in the open the black walnut is a rather symmetrical 

 tree, with a massive crown, short trunk, and a form similar to that 

 of open grown oaks and chestnuts. In the forest the trunk lengthens 

 into a tall, tapering column, often with no limbs for a distance of 50 

 or 60 feet, and surmounted by a much reduced crown. The foliage 

 is thin, and never completely shades the ground. On the lower 

 mountain slopes of the Carolinas a height of 110 feet and a diam- 

 eter of from 5 to 6 feet is often attained. The usual height of the 

 mature forest-grown tree is from 70 to 90 feet, and the diameter from 

 30 to 45 inches. Trunks of low, spreading trees in the open often 

 measure over 6 feet in diameter. 



RANGE. 



Black walnut is one of the most widely distributed and valuable 

 of our deciduous trees. In nature it grows sparingly from south- 

 western New England westward, through New York, Ontario, Michi- 

 gan, and Wisconsin, to southern Minnesota, thence southward, with 

 central Nebraska and Kansas as the western limit, to south central 

 Texas and Florida. It does not appear along the Gulf or the South 

 Atlantic seaboard, and is much more abundant in the Central than in 

 the Eastern States. 



"Although of fair size wherever found, black walnut attains its best 

 development in the deep hollows of the western slope of the southern 

 29343 No. 8807 M 



