Pearly Everlasting has naturalized in the meadow around our lake. It has white flowers with yellow centers and silver foliage. Perfect for dry sunny areas/meadows. It is a beautiful cut flower and dried flower. It has also been used as food and medicine, as a plant for dyeing and the flowers and stems have been used as incense. It is also a host plant for caterpillars of American Lady butterfly (Vanessa virginiensis) and Painted Lady butterfly (Vanessa cardui). Butterflies use the plant as a food source in early spring and pollinators love its flowers in summer/fall.
Native Americans used the plant in several different ways. The steam from the boiled plant was, and possibly can still be, used to: treat headaches, help with rheumatism, loosen mucus, help with asthma. In herbalism is it considered a Anti-inflammatory, Astringent, Antihistamine, Expectorant, Diaphoretic, mild Sedative. Supposedly, smoking the flower can help treat colds. Pearly Everlasting has also been used as a tobacco substitute.
Externally the plant has been known to treat wounds and sores and soften skin.
One important thing is that ingesting A. margaritacea has been known to reduce milk production in nursing mothers.
The leaves can be cooked like other leafy green. The stems might also be edible, but their fuzziness is not very palatable.
As for using any edible or medicinal wild plants, do your research!