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hyacin

Taking another shot at identifying this grassy weed

hyacin
6 years ago

Seattle area. Lawn is mostly rye and fescue, but I'm being invaded by something that spreads underground. It is lighter in color and grows faster than the rest of the lawn. It doesn't grow in a bunch and spread outward from there, it seems more like rhizomes with the plant choosing vertical growth. I haven't seen a seedhead. The blades come out folded in half so the stem is flat-ish. Here are some picks from in the lawn: