Polygonum hydropiperoides (Swamp Smartweed) is a moisture-loving, clump-forming perennial native to Texas and widespread across North America. With upright stems, narrow dark green leaves, and small green flowers clustered on slender spikes, it’s a quiet workhorse in wetland gardens, restoration zones, and rain gardens. Thriving in saturated soils, ditches, and pond edges, this plant plays a role in stabilizing soil and supporting wetland biodiversity. Its dense root system makes it a great candidate for bog filters or native wet edges.

Scientific Name: Polygonum hydropiperoides
Origin: Texas and North America
Native Habitat: Marshes, ditches, stream edges, and other consistently wet areas
Height: Up to 3 feet
Spread: 1 to 2 feet (clumping to spreading habit)
Light: Full Sun
Water: Moist to Wet
Hardiness: USDA Zones 5–10
Bloom: Summer