Matricaria discoidea

About

Matricaria discoidea, commonly known as pineappleweed, wild chamomile, disc mayweed, and rayless mayweed, is an annual plant native to North America, northern Asia, and Europe where it grows as a common herb of fields, gardens, and roadsides. It is in the daisy family Asteraceae. When crushed, the flowers and foliage emit a strong pineapple-like aroma, giving the plant its common name.

Summary from Wikipedia