Menace growing in famous Seattle marsh

Menace growing in famous Seattle marsh
SEATTLE – Drivers on the State Route 520 floating bridge may have noticed workers on air boats spraying a bright blue-colored herbicide in the marshlands. “The blue is a harmless dye that lets us see what plants we’ve sprayed and what we haven’t,” explained University of Washington gardener Neil Bonham as he guided us through a thick floating mat of plant life near the bridge. He is looking for …

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