UTILIZATION OF BLACK WALNUT. 7 



SUPPLY. 



RANGE. 



The black-walnut tree grows naturally over a large area extending 

 from southwestern New England to central Nebraska, Kansas, Okla- 

 homa, and Texas. The limits of its distribution are shown in figure 

 1. Within the limits of its range, however, there are regions un- 

 favorable to its growth where it is almost unknown. Black walnut 

 grows best on soil that is rich, moist, and deep, but not wet. It is, 



therefore, 

 its range, 

 side-, and 

 limestone 



overlying 

 furnishes 

 walnut is 



Fig. 1. — Botanical range of black walnut {Juglans nigra). 



not generally found on the higher elevations throughout 

 nor on wet bottom lands, but in moist coves, on fertile hill- 

 on the well-drained soil of valleys and bottom lands. A 

 soil or sandy loam containing a large quantity of humus, 

 a deep subsoil of gravel, with a sufficient water supply, 

 ideal conditions for growth. West of the Mississippi the 

 confined generally to river valleys and moist situations. 



