Castilleja peckianaPennell

Peck's Indian paintbrush

WFO wfo-0000590449 Accepted WFO 2026-06 7 photographs CC0 / CC BY

Plate 1 figs. a–g · 3 observations

This species has been photographed under an open licence only 3 times, so some figures below are different views of the same plant, taken on the same day, rather than different individuals. They are usually different parts of it: the leaf, the flower, the bark.

Castilleja peckiana, photographed by Edward Cope
fig. a Edward Cope, CC0 1.0 / 2019-06-28 / obs. 113846559
Castilleja peckiana, photographed by Joseph Rojas
fig. b Joseph Rojas, CC BY 4.0 / obs. 203745526
Castilleja peckiana, photographed by Matt Berger
fig. c Matt Berger, CC BY 4.0 / obs. 148976656
Castilleja peckiana, photographed by Joseph Rojas
fig. d Joseph Rojas, CC BY 4.0 / obs. 203745594
Castilleja peckiana, photographed by Matt Berger
fig. e Matt Berger, CC BY 4.0 / obs. 148976655
Castilleja peckiana, photographed by Joseph Rojas
fig. f Joseph Rojas, CC BY 4.0 / obs. 203745565
Castilleja peckiana, photographed by Matt Berger
fig. g Matt Berger, CC BY 4.0 / obs. 148976676

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Native range 4 botanical countries

Regions where Castilleja peckiana is native: California, Idaho, Nevada, Oregon CaliforniaIdahoNevadaOregon
Native distribution of Castilleja peckiana, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows.
RegionTDWG codeContinent
California CAL NORTHERN AMERICA
Idaho IDA
Nevada NEV
Oregon ORE

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Where it actually grows measured, from 108 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -12.6 °C -8.0 °C -3.6 °C
Warmest month, mean daily high 22.6 °C 27.1 °C 29.4 °C
Annual rainfall 336 mm 517 mm 1,020 mm
Rainfall in the driest quarter 41 mm 57 mm 82 mm

It is found where winters bring hard frost. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 108 research-grade observations of Castilleja peckiana that carry a coordinate, and this is the range those places actually span. The 5th and 95th percentiles are used rather than the minimum and maximum, because a single cultivated specimen in a heated conservatory should not widen a tropical plant's range to the Arctic.

This is not a hardiness zone. A USDA zone is the average annual extreme minimum temperature. The figure above is the mean daily minimum of the coldest month, which is a different quantity and is typically far warmer. Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.