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| Black Walnut with spring leaves—its "yearly trick of looking new" (Philip Larkin, The Trees). Union Grove State Park, South Dakota. |
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| Walnuts from a previous year, still unopened. Is extreme toughness adaptive? |
Continuing my quest to get to know South Dakota's trees, I chose Black Walnut (
Juglans nigra) for this month's
tree-following. It's native to the state but barely, probably just in the far east. This is another deciduous hardwood that's common ...
