Back Porch Ecology
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Back Porch Ecology

Walnuts: friend or foe?

When it comes to the negative impacts of walnuts on other plants, first figure out what species you are dealing with.

Juglans regia (English walnut) on the left, J. nigra (black walnut) on the right

Walnuts are funny trees. They make a high-value food that is very difficult to access (very hard-to-crack shells), seed themselves everywhere thanks to the actions of greedy squirrels, and can generally be a gardeners worst nightmare. Walnuts produce a nasty chemical called juglone, which inhibits plant…

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Jimmy Candou

Jimmy Candou

A writer living in the PNW who just wants to tend to his garden.