Rydberg’s Horkelia
(Horkelia rydbergii)
Rydberg’s Horkelia (Horkelia rydbergii)
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Krzysztof Ziarnek, Kenraiz
CC BY-SA 4.0
Image By:
Krzysztof Ziarnek, Kenraiz
Recorded By:
Copyright:
CC BY-SA 4.0
Copyright Notice:
Photo by: Krzysztof Ziarnek, Kenraiz | License Type: CC BY-SA 4.0 | License URL: https://creativecommons.org/licenses/by-sa/4.0 | Uploader: Kenraiz | Publisher: Wikipedia Commons
































Estimated Native Range
Summary
Horkelia rydbergii, commonly known as Rydberg’s Horkelia, is an evergreen perennial herb native to the Transverse Ranges of Southern California. It typically grows to a height of 0.4-0.7 feet and can spread to about 2 feet wide. The plant forms a low-growing mat with deeply lobed leaves, and during the summer, it produces delicate flowers that are white with pinkish stamens, adding a subtle charm to garden settings.
Rydberg’s Horkelia is valued for its drought tolerance and ability to thrive in rocky, well-drained soils, making it an excellent choice for rock gardens, alpine collections, and xeriscaping. It is also used as a ground cover in native plant gardens and is appreciated for its low maintenance requirements. While it prefers full sun, it can tolerate partial shade, especially in hotter climates. Gardeners should note that it requires well-drained soil to prevent root rot. This species is not commonly affected by diseases or pests, making it a resilient addition to the garden. However, it is not widely available in the nursery trade, so gardeners may need to seek out specialty native plant nurseries to obtain it.CC BY-SA 4.0
Rydberg’s Horkelia is valued for its drought tolerance and ability to thrive in rocky, well-drained soils, making it an excellent choice for rock gardens, alpine collections, and xeriscaping. It is also used as a ground cover in native plant gardens and is appreciated for its low maintenance requirements. While it prefers full sun, it can tolerate partial shade, especially in hotter climates. Gardeners should note that it requires well-drained soil to prevent root rot. This species is not commonly affected by diseases or pests, making it a resilient addition to the garden. However, it is not widely available in the nursery trade, so gardeners may need to seek out specialty native plant nurseries to obtain it.CC BY-SA 4.0
Plant Description
- Plant Type: Herb
- Height: 0.5-1 feet
- Width: 1.5-2 feet
- Growth Rate: Moderate
- Flower Color: White
- Flowering Season: Summer
- Leaf Retention: Evergreen
Growth Requirements
- Sun: Full Sun
- Water: Low
- Drainage: Medium
Common Uses
Low Maintenance
Natural Habitat
native to the Transverse Ranges of Southern California
Other Names
Common Names: Parry Horkelia
Scientific Names: , Horkelia parryi, Horkelia rydbergii, Horkelia bolanderi subsp. parryi, Potentilla bolanderi var. parryi, Horkelia bolanderi var. parryi, Potentilla bolanderi var. rydbergii, Horkelia bernardiana, Potentilla rydbergii,
GBIF Accepted Name: Horkelia rydbergii Elmer