Bog goldenrod earns its name honestly, making its home in the saturated soils and wetland edges where most ornamentals give up. Where the ground stays reliably wet, this native perennial sends up stiff stems to 4 or 5 feet, crowned with tight clusters of gold flowers that arrive just as summer releases its grip. It belongs to the Asteraceae family alongside its drier-ground cousins, but its taste for moisture sets it apart within the goldenrod genus.

Like all goldenrods, it has spent decades shouldering the blame for hay fever allergies that properly belong to ragweed, whose wind-borne pollen is the real culprit. Bog goldenrod's pollen is heavy and sticky, carried by bees rather than air. Plant it at pond edges, rain garden margins, or any low spot that tends to stay wet, and it will naturalize readily. Hardy from zones 3 through 8, it asks for little once settled and shrugs off deer browse with ease.