Polygonum spp.

  • seeds are edible.

  • seeds can be eaten whole or pounded into meal.

  • plants can be cooked and eaten.

  • varieties in the Pacific Northwest include Common knotgrass (Polygonum aviculare), Common knotweed (Polygonum arenastrum) and Mountain knotweed (Polygonum douglasii).

  • grows as a weed in a wide range, including dry areas, plains, and subapline regions.

  • raw plants eaten in quantity may cause stomach upset and/or diarrhea.

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