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Coastal Joe Pye Weed

Eutrochium (Eupatorium) dubium

Large clusters of dark mauve-purple flowers grace this popular native Joe Pye Weed in late summer. Its bold form, tough disposition, and butterfly attracting abilities are admired around the world. Hardy in zones 5 through 8.

 

Large flower clusters of Joe Pye Weed (Eutrochium dubium) in late summer

 

 

Pot size: 4.5 in. wide x 5 in. deep (32 fl. oz)

 

 

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Growth Habit

  • Upright and rarely needs to be staked
  • 5 to 6 ft. tall and wide
  • When planting in groups space plants 4 to 6 ft. apart
  • Flowering Period

    Late August in central NC. Flowering lasts for around four weeks.

    How to Grow to Joe Pye Weed

  • Sun to part shade – at least 5 hours of direct sun for plenty of flowers
  • Moist to wet soil
  • Plants will tolerate periodic drought in heavier soil, but do not grow well in dry sandy soil. Old flowering stems can be cut to ground level during the winter.

    Where to Plant

  • Ditches
  • Pond edges
  • Rain gardens
  • Wildlife Value

    The flowers are pollinated by:

  • Butterflies, especially swallowtails flock to the late summer flowers
  • Bumble bees
  • Solitary bees
  • Reported host plant for 42 species of butterfly and moth caterpillars, including:

  • Common pug
  • Leconte's haploa
  • Native Habitat and Range

  • Swamps and roadside ditches
  • Most commonly found in the coastal plain from Nova Scotia to Georgia
  • Source and Origin

    Plants are grown from seeds collected on the edge of a swamp in Pender County, North Carolina.

    Comments

    Unlike its inland cousins, Coastal Joe Pye Weed stays well under 10 ft. tall and has darker flowers.

    Propagation

    Viable seed usually germinates within a couple weeks of sowing at temperatures above 80°F (27°C).