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Old 06-17-2004, 03:22 PM
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Default black walnut an invasive weed along Sacramento River?

From: James Dempsey,
Date: 05/24/01
Time: 11:28 AM

Black walnut is considered native only to Napa and Contra Costa Counties. Does anyone have any thoughts about eliminating it as an invasive species from riparian Sacramento River areas in the North?
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