A weed growing the alley or a treasure to a florist? Or maybe even the wrong ID.
Anaphalis (A-ná-pha-lis) is a genus within the composite family whose members are commonly known by the name Pearly everlasting. There are around 110 species within the genus with the vast majority being native to central and southern Asia. There is one species native to North America that is fairly well known and popular in cultivation, namely the Western Pearly Everlasting (Anaphalis margaritacea).
