-9- 



Ben Davis, VJ'inter Banana, Early Mclntoch, Late Blooming - Northern Spy, 

 Rome, Gallia, N» \i» Greening, Macoun, ' 



In general, any tivo of these varieties v/ill pollonizo each other 

 satisfactorily when their blooming seasons overlap. Early and midseason 

 bloom overlap satisfactorily in New England; also midseason and late bloom. 

 Delicious and its red sports are particularly good pollenizers. However, 

 all varieties are crossincompatible with their own red sports, and the 

 Cortland-Sarly Mcintosh combination is not sufficiently fruitful. 



Poor pollenizers (Triploid varieties): Baldwin, R* I. Greening, Gravenstein, 

 King, Roxbury Russet, Stark, Stayman, Idammoth Black Twig, 



These should not be depended upon for pollenizing purposes. Any 

 good pollenizer will cross-fertilize these varieties if the periods of 

 bloom overlap. Northern Spy is not very attractive to bees and needs 

 pollenizers close to it. 



Pears ; Varieties of pears are, in general, self-unfruitful* Cross-pollination 

 should be provided, Bartlett and Seckel apparently will not pollenize 

 each other under some conditions. There is little evidence of cross- 

 incompatibility among other common varieties. Usually the blooming seasons 

 overlap enough to provide cross-pollination but the follovdng list may 

 help to match blooiTiing periods more closely. Early Blooming ; Anjou, 

 Kieffer, Hov/ell, Duchess, Midseason Blooming ; Bosc, Bartlett, Clapp Favorite, 

 Seckel, Gorham, Late Blooming ; YJinter llelis, Wilder, 



Peaches ; Most of the common varieties of peaches are self-fruitful. Among 

 the exceptions are J, H, Hale, tiikado or June Elberta, and Pacemaker, vmich 

 require cross-pollination, aIso Greensboro and Belle of Georgia have been 

 reported as more productive when cross-pollinated. As far as is known 

 any other common commercial variety v/ill pollenize these. 



Plums; All Japanese plums may be considered self-unfruitful. Most 

 varieties pollenize each other freely but at least one common variety, 

 Formosa, has poor pollen, European plums pollenize Japanese varieties 

 to a limited extent, A few European plums are self-fruitful (Stanley, 

 Monarch, Yollovj Egg, Damsons), Many are only partly self- fruitful. It 

 is advisable to plant at least two varieties together, Japanese plums are 

 not good pollenizers for European sorts. 



Cherries ; All sweet cherry varieties require cross-pollination, Bing, 

 Lambe rt , Napoleon, and Emperor Francis will not fertilize each other but 

 each may be fertilized by other common varieties. Common varieties of 

 sour cherries are self -fruitful. 



Grapes ; Common varieties of grapes axe self-fruitful except Brighton and 

 Erie, v/hich need cross-pollination. 



