CHERRIES AS BUSHES AND PYRAMIDS 115 



be planted twelve feet apart, whereas espaliers on 

 the cherry stock require to be eighteen or twenty feet 

 apart. For potting, for forcing, cherries on this 

 stock are highly eligible, as they grow slowly and 

 bear abundantly.' 



CHERRIES AS SINGLE VERTICAL CORDONS 



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Thje varieties best adapted for this very interesting 

 mode of culture are those of the Duke tribe, such as 

 the May Duke, Archduke, Empress Bug6nie, Royal 

 Duke, and the Morello. Young pyramidal trees, three 

 feet apart, should be planted in rows, and their side 

 shoots pruned into within two inches of their stems. 

 They require the same summer pinching as that recom- 

 mended for vertical cordon pears, p. 48, and should not 

 be allowed to exceed eight or ten feet in height. Nothing 

 can be more charming than these cordon cherry trees, 

 with their bright ripe fruit hanging close to the stem, 

 and shining through the net that protects them from 

 the birds. The best protection, both from birds and 

 wasps, is, however, Haythorn's netting, or coarse muslin, 



' Cherry trees are often infested in summer with the black aphis. 

 The best remedy is a mixture made by boiling four ounces of quassia 

 chips in a gallon of soft water for ten minutes, and dissolving in it 

 four ounces of soft soap at the time of application. It should be 

 stirred, and the trees syringed with it twice or thrice. The day 

 following they should be syringed with pure water. 



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