Vernonia altissima (Asteraceae)
This fabulously tall Ironweed will reach a height of 8' in optimum conditions. Found throughout much of the eastern US in sunny wet meadows, marshy areas and along pond edges. Fluffy bright-magenta blooms emerge on broadly branched panicles in late summer. Site this impressive plant at the back of the border, in damp naturalized areas, or anywhere you want a big and bodacious splash of late-season color. (AKA Vernonia gigantea.)
Bloom period: fall
Container size: Qt.