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Pinus coulteri; photograph (c) colinpena, some rights reserved (CC BY) CC BY(c) colinpena, some rights reserved (CC BY) · observed growing wild · 2026-09-06

Pinus coulteri D.Don

Bigcone pine; Coulter pine; Pitch pine

Pinaceae · California, Mexico Northwest

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Pinus coulteri, photograph author not stated, no rights reservedPinus coulteri, photograph author not stated, no rights reservedPinus coulteri, photograph author not stated, no rights reservedPinus coulteri, photograph author not stated, no rights reservedPinus coulteri, photograph author not stated, no rights reservedPinus coulteri, photograph author not stated, no rights reserved 84 photographs ›
Habitat figures
Cold floor (1 night in 100)
-3.1°C
Record low -8.1 °C in 44 years, at a typical spot in the range NASA POWER
Warmest month, mean daily high
30°C
Jul and Aug at the habitat CHELSA
Rain a year (median across the range)
555mm
7 months of 25 mm or more in the median year CHELSA
Open-sky light
18–54DLI
Lowest to highest month (DLI) CHELSA
The year in your months, northern hemisphere
  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec
Wet winters: the rain comes December to March, read as a winter growing season. rain rule, CHELSA
Northern hemisphere unless you set your site. The chart is in the habitat's months.

Summary

Coulter pine (Pinus coulteri), or big-cone pine, is a species of conifer in the family Pinaceae. Coulter pine is a medium-sized coniferous tree that lives up to 100 years. It is a native of the coastal mountains of Southern California in the United States and northern Baja California in Mexico, occurring in mediterranean climates, where winter rains are infrequent and summers are dry with occasional thunderstorms. Isolated groves are found as far north as Clearlake, California, on the flanks of Mt. Konocti and in Black Diamond Mines Regional Preserve. More on Wikipedia ›

Quoted from Wikipedia, "Coulter pine", CC BY-SA 4.0.

Cultivation

Seasons

The rain rule reads a winter growing season: 70% of the median year's rain (391 mm of 540 mm) falls in December to March, cooler than the year (wet-season mean 8.2 °C against a yearly mean of 13.9 °C). Months are the habitat's, northern hemisphere; shifted six months for a southern-hemisphere collection: June to September.

Rain

540 mm in the median year at the habitat, 391 mm of it December to March. Wettest month February at 113 mm, driest month July at 2 mm; 3 months under 5 mm. Across the grid cells of the range the year's total runs 372 mm to 890 mm, the 10th to 90th percentile of each cell's own year. The median of the cells' own yearly totals, 555 mm, is the year's rain at the top of the page; the 540 mm here is the median year's, the twelve monthly medians added, which the rain rule reads. Habitat calendar, northern hemisphere; median year across the grid cells of the range, CHELSA.

Light

Open sky over the habitat: 18 to 54 mol/m²/day across the year (daily light integral, median year across the grid cells of the range, CHELSA; the lowest 10th-percentile month across the cells is 14, the highest 90th-percentile month 55).

Warmth and air
Temperature

Coldest: the 1st-percentile night over 44 years at a typical spot in the range is -3.1 °C, the absolute minimum -8.1 °C, 1,399 frost nights in 44 years, 31.8 a year (NASA POWER daily minima). Warmest: the 99th-percentile day is 32.8 °C. Monthly means: the coldest month's mean nightly low 2.6 °C in January (across the grid cells of the range -1.2 °C to 5.8 °C), the warmest month's mean daily high 29.7 °C in July (median year across the grid cells of the range, CHELSA). Cold floor: -3.1 °C, which is the 1st-percentile night over 44 years at a typical spot in the range (NASA POWER).

Humidity

Relative humidity at the habitat: 45 to 54% across the year (monthly means, median year across the grid cells of the range, CHELSA). A figure about the air, saying nothing about how the plant takes water.

How this section is made

Each card states this species' habitat figures with their sources, and what two fixed rules read from them; nothing here says what the plant does, wants or tolerates. The rules · the terms.

Seasons. Read from the median year of CHELSA monthly rainfall and mean temperature across the grid cells of the range: the rain rule takes the smallest set of months carrying 70% of the rain and calls it winter when its mean is more than half a degree below the year's, summer when more than that above, and neither in between; the temperature rule, used only under 120 mm, names the cooler six months when they are at least a degree cooler than the other six. Months are shifted for the other hemisphere only where the temperature curve moves 4 °C or more and the habitat lies 10° or more from the equator. A reading of the curves, not an observation of the plant.

Rain. CHELSA monthly precipitation, median year across the grid cells of the range. The rain that falls where the species is recorded; nothing about how the plant takes water.

Light. CHELSA shortwave radiation at each envelope cell, a daily-mean flux taken to a daily total and converted at 2.07 mol of PAR per MJ. The sky over the habitat, measured; what reaches a plant under a rock, a shrub or a shade cloth is not.

Temperature. NASA POWER daily minima and maxima over 44 years at a typical spot in the range, lapse-corrected +625 m to its elevation; CHELSA monthly means, median year across the grid cells of the range. The cold floor is the 1st-percentile night named in its sentence. Not a measured survival limit for any plant in a pot.

Humidity. CHELSA relative humidity, median year across the grid cells of the range.

Climate across the habitat

Habitat months, northern hemisphere

Habitat climate of Pinus coulteri through the yearWarmest months July and August, mean daily high 30 °C; coldest month January, mean nightly low 2.6 °C; 540 mm of rain in the median year (the twelve monthly medians added). Medians across the range, from CHELSA; the extremes at the edge from NASA POWER. Habitat months, northern hemisphere.-10°0°10°20°30°40°frost32.8° 99th-percentile day, NASA POWER-8.1° lowest night in 44 years, NASA POWER°C · day and nightcold quarter050100150200mm rainDLI 18–54RH 45–54%JanFebMarAprMayJunJulAugSepOctNovDec
day night rain medians and 10th–90th percentile across 325 habitat cells, CHELSA cold quarter: the three months around the coldest month's mean nightly low extremes over 44 years at a typical spot in the range, from NASA POWER, marked at the edge, in no month DLI, mol/m²/dayRH %each on its own scale
Figures by month
JanFebMarAprMayJunJulAugSepOctNovDec
Day °C13 / 10–1614 / 10–1616 / 12–1819 / 15–2123 / 19–2527 / 23–2930 / 25–3230 / 25–3227 / 23–2922 / 19–2417 / 14–2013 / 10–16
Night °C3 / -1–63 / -1–64 / 1–76 / 3–99 / 6–1212 / 10–1415 / 13–1815 / 13–1814 / 11–1610 / 7–126 / 2–93 / -1–6
Rain mm104 / 71–178113 / 81–17585 / 57–13540 / 24–6212 / 7–213 / 2–62 / 1–134 / 1–179 / 5–1527 / 17–4452 / 34–10489 / 54–156
DLI20 / 16–2325 / 21–2835 / 30–3744 / 40–4650 / 47–5254 / 51–5552 / 50–5347 / 46–4940 / 38–4231 / 27–3423 / 18–2618 / 14–21
RH %51 / 47–6053 / 49–6154 / 48–6052 / 46–5850 / 43–5847 / 39–5645 / 39–5545 / 41–5546 / 41–5548 / 43–5549 / 44–5850 / 45–59
How this section is made
Each figure is the median across the 325 grid cells holding the 1294 in-range records, with the 10th–90th percentile span across those cells after the slash where it differs. A dash is a month one or more of those cells has no figure for in the grid (a variable CHELSA does not carry there), so no median is taken rather than one over fewer cells. Extremes and elevation were read at a typical spot in the range, cell 1077:1171 (36.125, -121.425). Over 44 years there: absolute minimum -8.1 °C, 1st-percentile night -3.1 °C, 99th-percentile day 32.8 °C. Normals: CHELSA V2.1 1981–2010 climatology, 0.05° cells (each the mean of ~36 1 km pixels). Across the range: median and 10th–90th percentile of each month across the 325 distinct grid cells holding 1294 of the 1294 in-range records; extremes and elevation at the typical cell 1077:1171 (its coldest month's mean nightly low nearest the median across cells); its position is the cell centre. Extremes: NASA POWER (MERRA-2) daily 1981–2024, cell 36.00_-121.250, lapse-corrected +625 m at 6.5 °C/km. Elevation: ETOPO 2022, 1004 m (cell mean).

Natural habitat

Native range as published by WCVP; the marker is where the records are densest and decides nothing: the climate was read across the cells of the in-range records placed well enough to read one, not at the marker.
Openly licensed records inside the range, framed on where they fall.
NativeCalifornia, Mexico Northwest · introduced: Spain, Morocco, Tunisia · regions are the level-3 units of the World Geographical Scheme for Recording Plant Distributions, as Kew's World Checklist records ranges, some under historical names such as Yugoslavia or Czechoslovakia (how).
Map marker33.741, -116.743 · in the densest population, 971 records (65% of those in range)
Kew's description“tree” · “subtropical” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 1489 georeferenced records inside the native range; the climate across the range on the 1294 of them placed to within 10 km; the map shows only the 422 openly licensed ones, which alone would put the marker 5 km away. 27 records outside the WCVP native range not used. 195 in-range records are placed to worse than 10 km, or with no stated accuracy (admitted only as a person's observation to three decimals), and stay on the map but off the climate.
How this section is made
The map marker: the openly licensed record nearest the middle of the densest 1° population of the 1489 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Pinus coulteri, photograph 1did not loadPinus coulteri, photograph 2did not loadPinus coulteri, photograph 3did not loadPinus coulteri, photograph 4did not loadPinus coulteri, photograph 5did not loadPinus coulteri, photograph 6did not load

Photographs: author not stated, no rights reserved · CC0 (6).

Similar habitat climate The 6 nearest by mean daily high, mean nightly low and rain, month by month. How.

Stachys albens Stachys albens Whitestem hedgenettle Photo: CC BY, klickloCalochortus venustus Calochortus venustus Butterfly mariposa lily Photo: CC BY-SA, Brian FinzelPseudotsuga macrocarpa Pseudotsuga macrocarpa Big-cone Douglas-fir Photo: CC0, author not statedAsclepias californica Asclepias californica California milkweed Photo: CC BY, klickloCeanothus palmeri Ceanothus palmeri Palmer's ceanothus Photo: CC0, author not statedCercocarpus betuloides Cercocarpus betuloides Birch-leaf Mahogany Photo: CC BY, David Anderson

Other Pinus 110 in the reference

Pinus albicaulis Pinus albicaulis Whitebark pine Photo: CC0, author not statedPinus aristata Pinus aristata Colorado bristlecone pine Photo: CC0, author not statedPinus arizonica Pinus arizonica Arizona pine Photo: CC BY, CK2AZPinus armandi Pinus armandi Pinaceae Photo: CC BY-SA, nekonoir on FlickrPinus attenuata Pinus attenuata Knobcone pine Photo: CC BY, Max MileyPinus × attenuradiata Pinus × attenuradiata Pinaceae Photo: CC0, author not statedPinus ayacahuite Pinus ayacahuite Mexican white pine Photo: CC BY, Neptalí Ramírez MarcialPinus balfouriana Pinus balfouriana Foxtail pine Photo: CC0, author not statedPinus banksiana Pinus banksiana Jack pine Photo: CC BY, Nathan AaronPinus bhutanica Pinus bhutanica Bhutan Pine Photo: CC BY, Tandin Wangdi Pinus brachyptera Pinaceae Pinus brutia Pinus brutia Calabrian pine Photo: CC BY, Ксения Волянская all 111 ›

Names & registers

Also known as Pinus coulteri var. diabloensis; Pinus macrocarpa; Pinus ponderosa subsp. coulteri. (GBIF Backbone)

GBIFPOWOIPNIWFOWikidataWikipediaiNaturalist

The record

Family
Pinaceae
Described by
D.Don
Native to
California, Mexico Northwest
Wild records
1489 in range · 422 open

Every figure here is derived from public data by a stated rule and names its source; nothing about this species is written for its page by a person or by AI, apart from the marked, credited quotations. How →

Where this page came from built 2026-10-22
GBIF species record gbif.species answeredasked 2026-10-22
GBIF synonyms gbif.synonyms answeredasked 2026-10-22
GBIF common names gbif.vernacular answeredasked 2026-10-22names fetched 2026-10-22
WCVP native range wcvp.distribution answeredas of 2026-06-04
GBIF occurrence records gbif.occurrences answeredas of 2026-10-21GBIF occurrence download https://doi.org/10.15468/dl.hbdw64, of 2026-10-21; 15 records within 1 km of a botanic garden, herbarium or zoo left out (12 at a botanic garden or arboretum, 3 at a herbarium; Wikidata's list)
Habitat climate climate answeredasked 2026-10-22
Daily extremes (NASA POWER) climate.extremes answeredasked 2026-10-22NASA POWER (MERRA-2) daily 1981–2024, cell 36.00_-121.250, lapse-corrected +625 m at 6.5 °C/km
Wikidata wikidata answeredasked 2026-10-22
Wikipedia wikipedia answeredasked 2026-10-22Wikipedia's article Coulter pine, the English article of this species' Wikidata item (Q1137001)
iNaturalist photographs, wild inat.photos.wild answeredasked 2026-10-22from iNaturalist's open data of 2026-09-27: research-grade observations with an open-licence photograph, the 24 whose photographs iNaturalist received last (the open data holds no votes); filled 2026-10-22
iNaturalist photographs, cultivated inat.photos.cultivated not asked
GBIF media gbif.media answeredasked 2026-10-22
OpenAlex papers openalex not askednot yet asked for this reference; a later fill takes the papers from OpenAlex's snapshot

Every source is recorded as having answered, reported nothing, refused, failed, not been asked, or answered twice where one answer is taken (“not taken: two items answered”), and, for a source asked when this page was built, when: the figures are as the source held them that day; a source read from a file (Kew's World Checklist, a GBIF download) says "as of" the file's day instead; a row carried from an earlier build of the page names that build instead. Only “nothing to report” is ever shown as an absence. Records came from 66 datasets via GBIF.org; each carries its own licence.

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