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Reviled invasive taking root in San Geronimo Valley

by Samantha Kimmey March 16, 2017

japanese_knotweed — INVASIVES: The canes of the deciduous Japanese knotweed can punch through concrete. Eric Wrubel, NPS

Invasive plants are not uncommon in Marin, but a relatively new encroacher in the San Geronimo Valley has a particularly fearsome international reputation.

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