68 VARIETIES DISEASES AND INSECTS. 



Tradescants.Vei'y large, black, fine, juicy and good; tree vig- 

 orous and very productive ; middle of July. 



DUKE CHERRIES. The trees are round in form, with strong 

 shoots, and the fruit generally sweet. 



May Duke. An old variety of good quality, large, dark red, 

 tender and rich; tree vigorous, hardy and productive; middle 

 of June. 



Royal Duke. Very large, of good quality, and ripens a little 

 later than the last; vigorous and productive. 



Reine Hortense. A French variety of great value ; large, juicy, 

 sweet and good; tree remarkably vigorous and erect. 



MORELLO CHERRIES. Head round, shoots slender, tree of 

 small size and fruit acid. 



Early Richmond. A large, early, red Cherry, valued especially 

 for cooking and preserves. It is more extensively grown per- 

 haps than all other kinds together. The tree is vigorous and re- 

 markably productive, ripening its fruit in June. 



Belle Magmfique. A very large, late Cherry of better quality 

 than the last; tree vigorous and productive; middle to last 

 of July. 



DISEASES AND INSECTS. The Cherry is comparatively free 

 from destructive diseases. In moist, unfavorable seasons, a .mil- 

 dew sometimes attacks the leaves, doing some injury, and may 

 be avoided by good cultivation. 



The Cherry Aphis or Louse (Mf/.-tiis cerasi), is the small, black 

 aphis that appear so abundantly upon the leaves and young shoots 

 of the Cherry tree in summer. It is injurious by sucking the 

 juices of the plant, causing the leaves to curl and the growth 

 to cease. 



The tice are destroyed with a strong solution of soap and to- 

 bacco water, and also by dusting with pyrethrum just at night. 

 With young trees, the branches may be bent down and dipped 

 in basins of the above solution. 



The Rose Bug, described on Page 80, in the chapter on the 

 grape, is often destructive to the foliage and may be destroyed 

 by placing the curculio screen under the tree and applying the 

 pyrethrum or Buhach powder, when they will all fall to the 

 ground paralyzed. 



The Plum Curculio often punctures the fruit ^and the worms 

 found in the Cherries are its larvae. Upon young trees the jarring 

 process of destruction may be followed, but the use of poultry is 

 much more satisfactory, when the trees become large. 



