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AMERICAN PLUM (Prunus americana)
CANADA PLUM (Prunus nigra}
Other names: wild plum

VERY POOR

The American plum occurs from Wyoming and Colorado and eastward throughout the eastern part of the country. Canada plum occurs in the Great Lakes region to Maine. Both are usually shrubs, rarely becoming tree size. As a small boy in northern Minnesota this writer had to pick wild plums for making jelly and jam but cannot recall ever seeing a plum tree more than 6" in diameter. They bear good eating fruit but would be very poor bearing trees. 

There is no report of any recovery of an original wild plum bearing tree. 

These species are not recommended as corner accessories. Something better will always be available.