the.com/ironweed

means A tall, hardy perennial wildflower (genus Vernonia) with clusters of deep purple-magenta blooms, common in wet meadows and roadside ditches across North America.

from The 'iron' comes straight from the plant's own toughness — its stem is famously wiry, tough, and rust-colored when dried, resisting cutting the way iron resists bending. The genus name Vernonia instead honors William Vernon, an English botanist who collected plants in Maryland in the 1600s — so the flower carries two names at once: a scientific one for the man who catalogued it, and a common one for the stubbornness it wouldn't let him forget.