Mock Bishopweed

(Ptilimnium capillaceum)

Mock Bishopweed (Ptilimnium capillaceum)

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Estimated Native Range
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Summary

Ptilimnium capillaceum, commonly known as Mock Bishopweed, is an annual herb that is native to wetlands, marshes, and moist woodlands in the Southeastern United States. It typically grows to a height of 0.5-2 feet (0.15-0.6 meters) and a width of 0.3-1 feet (0.09-0.3 meters). The plant has a delicate appearance with fine, feathery foliage and bears umbels of tiny white flowers during the summer months, which are moderately showy and attract pollinators.

Mock Bishopweed is valued for its airy texture and is often used in water gardens, rain gardens, and as a border plant in moist areas. It thrives in full sun to part shade and prefers consistently moist to wet soils with slow to medium drainage. While it is not drought-tolerant, it can be an excellent choice for areas with natural water sources or in gardens that can provide regular irrigation. Due to its preference for wet conditions, it is less likely to become invasive and is not known to have aggressive roots or significant disease problems. However, it may self-seed in ideal conditions.CC BY-SA 4.0

Plant Description

  • Plant Type: Herb
  • Height: 0.5-1.5 feet
  • Width: 0.3-1 feet
  • Growth Rate: Moderate
  • Flower Color: White
  • Flowering Season: Summer
  • Leaf Retention:

Growth Requirements

  • Sun: Full Sun
  • Water: Medium, High
  • Drainage: Medium, Slow

Common Uses

Bee Garden, Low Maintenance

Natural Habitat

Native to wetlands, marshes, and moist woodlands in the Southeastern United States

Other Names

Common Names: Herbwilliam , Atlantic Mock Bishopweed

Scientific Names: Ptilimnium capillaceum , Ammi majus , Discopleura capillacea , Ammi capillaceum , Discopleura major , Ammi junceum , Ammi rubricaule , Discopleura juncea , Ptilimnium junceum , Sison capillaceum , Sison rubricaule

GBIF Accepted Name: Ptilimnium capillaceum (Michx.) Raf.