Rock Harlequin

(Capnoides sempervirens)

Rock Harlequin (Capnoides sempervirens)

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Estimated Native Range
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Summary

Capnoides sempervirens, commonly known as Rock Harlequin, is a perennial herb that is often mistaken as an annual or biennial due to its variable lifespan. It is native to rocky outcrops, forest clearings, and alpine zones in the Northeastern and Northwestern USA, as well as across Canada and Alaska. This plant typically grows to a height of 20–80 cm (7.9–31.5 in) and is characterized by its slender stems and blue-green foliage. The flowers are tubular and exhibit a striking contrast with their pink bodies and yellow tips, measuring 1–1.7 cm (0.39–0.67 in) in length. They are arranged in attractive, dangling clusters that bloom profusely from May to September, providing a long season of visual interest.

Rock Harlequin is valued for its unique flower coloration and its adaptability to rocky and challenging sites, making it a suitable choice for rock gardens and naturalized areas. It is also used for its ability to thrive in part shade, which makes it versatile for various garden settings. While it prefers medium-drained soils, it can tolerate a range of soil conditions, provided they are not waterlogged. Gardeners should be aware that although it has low to medium water requirements, consistent moisture will support more vigorous growth.CC BY-SA 4.0

Plant Description

  • Plant Type: Herb
  • Height: 1-4 feet
  • Width: 0.5-1 feet
  • Growth Rate: Moderate
  • Flower Color: Pink, Yellow
  • Flowering Season: Summer
  • Leaf Retention: Deciduous

Growth Requirements

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

Common Uses

Deer Resistant, Low Maintenance, Rock Garden, Showy Flowers, Street Planting

Natural Habitat

native to rocky outcrops, forest clearings, and alpine zones in the Northeastern and Northwestern USA, as well as across Canada and Alaska

Other Names

Common Names: Harlequin Corydalis , Pale-Corydalis , Pink-Corydalis , Harlequin Flower , Pale Corydalis , Pink And Yellow Corydalis , Pink Corydalis , Corydale Toujours Verte , Corydale Toujours-Verte , Corydalis Pâle

Scientific Names: Corydalis sempervirens , Capnoides sempervirens , Corydalis glauca , Fumaria sempervirens , Corydalis rosea , Corydalis sempervirens f. candida , Corydalis annua , Capnoides glauca , Fumaria glauca , Fumaria rosea

GBIF Accepted Name: Capnoides sempervirens (L.) Borkh.