380 SYLVICULTURAL NOTES ON TIMBER TREES 



only be planted over existing coppice areas ; either as 

 standards over coppice, or as standards in high forest with 

 coppice. 



It is usually too risky to plant it in even-aged mixtures. 



Rotation. This should be 80 to 100 years. 



The financial return from planting it should be good, 

 even if only is. 6d. a cubic foot were realised for its timber. 

 If, however, the timber were to realise 55. to 73. a cubic foot 

 the price obtained for the best imported timber the tree will 

 prove to be one of the most profitable that can be planted. 



However, time alone can prove the market value of any 

 considerable quantity of home-grown Black Walnut. 



And, though extensive planting can be recommended on 

 suitable land in the south of England, it must be looked 

 upon in the nature of an experiment. 



