Pineapple weed (Matricaria discoidea) is an edible weed that has medicinal properties similar to chamomile. Used as a tea it is a carminative, antispasmodic, and mild sedative. It is bitter tasting, but honey helps. Pineapple weed is a PNW native, and can be found in compacted soil in high traffic areas. Look in driveway and sidewalk cracks. Both the leaves and flowers are edible, but the flowers are most commonly used.