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 Prunus nigra (Canada Plum or Black Plum) is a species of Prunus, native to eastern North America from New Brunswick west to southeastern Manitoba, and south to Connecticut across to Iowa. It formerly also occurred south to Ohio but is now thought to be extinct in that state.
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The fruit is eaten raw or cooked and is made into preserves and jellies.

The wood is bright red brown; heavy, hard, strong and close-grained, with a density of 0.6918.

If you want to learn more - visit: http://en.wikipedia.org/wiki/Black_plum

[MSL]

That's an interesting plant. I'd like to try these black plums.