Aquatic Milkweed

Asclepias perennis (White Swamp Milkweed or Aquatic Milkweed) is a graceful, moisture-loving perennial native to the southeastern U.S., including Texas. Known for its elegant white to pale pink blooms, this milkweed thrives in consistently wet soils—perfect for rain gardens, marshy areas, or pond edges. Its narrow, glossy green leaves and dark purplish stems offer year-round interest, while the flat-topped umbels of flowers bloom from late spring through early fall. A must-have for butterfly gardens, especially as a host plant for Monarch caterpillars, it also supports a wide range of pollinators.

Scientific Name: Asclepias perennis

Origin: Native (Texas and southeastern U.S.)

Native Habitat: Wetlands, floodplains, marshes, ditches

Height: Up to 32 inches

Spread: 1 to 1.5 feet

Light: Full Sun to Part Shade

Water: Moist to Wet

USDA Zones: 6-9

Bloom: May to September