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Serpentweed

Toiyabea peirsonii

Serpentweed
Photo: Dcrjsr, CC BY 4.0

Serpentweed (Toiyabea peirsonii) is a small, clump-forming perennial daisy from high California mountains, growing in rocky talus and granite cliff crevices at 2900 to 3700 m. It is a species that is rarely grown in gardens, and its key to success is cold, sharp drainage and full sun.

Family
Asteraceae (Daisy family)
Light
Full sun
Water
Water sparingly during the growing season and let the soil dry out between waterings; avoid winter wet.
Soil
Very gritty, fast-draining mineral mix with rock or grit added.
Temperature
Tolerates cold alpine conditions; protect from prolonged heat and wet cold.
How easy
Hard
Native range
California
Climate
temperate

About

Tonestus peirsonii is a local-endemic species of flowering plant in the family Asteraceae known by the common names Inyo tonestus, Peirson's serpentweed and Peirson's tonestus.

Where it grows

The plant is endemic to California, where it is known only from the Eastern High Sierra Nevada, and the White Mountains across Owens Valley to the east, both within Inyo National Forest. It grows in mountain habitat in subalpine and alpine climates at 2900–3700 m, preferring rock talus or niches in granite cliffs. These images are from the original type location high in Rock Creek basin, Inyo County CA.

Other Toiyabea plants

Alpine Goldenheads · Toiyabea eximia · Toiyabea granitica · Serpentweed

Text excerpted from the Wikipedia article Toiyabea peirsonii by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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