Answer: Not all fruit trees are self-fertile. Some require cross-pollination with a different cultivar of the same fruit. For instance, although some apple varieties, such as Lodi, Liberty, Empire, Winesap, Jonathan, Jonagold, Gala, Golden Delicious, Rome and Granny Smith may be listed as self-fruitful, they will set more fruit on an annual basis if they are cross-pollinated. Additionally, some apple varieties, such as Winesap, Stayman, Mutsu and Jonagold, produce sterile pollen and therefore cannot be used to pollinate other apple varieties. Many nursery catalogues include pollinization compatibility charts or can recommend good apple varieties to use as pollinizers. Or, you can send another question including the names of the fruit trees you'd like to plant and we will list the best pollinizers for each.
Best wishes with your edible landscape!
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