Sparse-Flowered Bog Orchid

(Platanthera sparsiflora)

Sparse-Flowered Bog Orchid (Platanthera sparsiflora)

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Estimated Native Range
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Summary

Platanthera sparsiflora, commonly known as Sparse-flowered Bog Orchid, is a perennial herb native to moist meadows, marshes, and streambanks in the western United States, including Colorado, New Mexico, California, Washington, and Oregon, as well as extending south to Baja California in Mexico. It typically grows up to 5 feet tall and features slender, erect stems. The basal leaves can reach up to 6 inches long, and the plant produces an inflorescence of widely spaced, twisted green flowers, which are small but intricately shaped, blooming from late spring to mid-summer. The flowers, although not brightly colored, are notable for their unique structure and fragrance.

This orchid is valued for its ability to thrive in wet, boggy conditions, making it a suitable choice for water gardens or naturalized areas that mimic its native wetland habitat. It requires consistently moist soil and does well in part shade to full shade conditions, reflecting its adaptation to forest understories and other shaded, moist environments. While not commonly used in traditional garden settings due to its specific requirements, it can be a unique addition to specialized native plant gardens or restoration projects. Gardeners should be aware that it may require protection from grazing by deer and other wildlife. Platanthera sparsiflora is not known for significant pest or disease issues but can be sensitive to drought and excessive heat.CC BY-SA 4.0

Plant Description

  • Plant Type: Herb
  • Height: 1-2.5 feet
  • Width: 0.5-1 feet
  • Growth Rate: Moderate
  • Flower Color: Green, Yellow
  • Flowering Season: Spring, Summer, Fall
  • Leaf Retention: Deciduous

Growth Requirements

  • Sun: Full Sun, Part Shade
  • Water: Medium
  • Drainage: Medium

Common Uses

Butterfly Garden, Low Maintenance, Water Garden

Natural Habitat

Native to moist meadows, marshes, and streambanks in the western United States and Baja California

Other Names

Common Names: Sparse-Flowered Bog Orchid, Few-Flowered Bog Orchid, Sparse-Flowered Orchid, Few-Flowered Orchid

Scientific Names: , Platanthera sparsiflora, Habenaria aggregata, Habenaria laxiflora, Habenaria leucostachys var. viridis, Habenaria sparsiflora, Habenaria sparsiflora var. laxiflora, Habenaria thurberi var. grayi, Limnorchis aggregata, Limnorchis ensifolia

GBIF Accepted Name: