

4 photographs › At a glance
- Jan
- Feb
- Mar
- Apr, shaded
- May, shaded
- Jun, shaded
- Jul, shaded
- Aug, shaded
- Sep, shaded
- Oct
- Nov
- Dec
About the genus · Pulsatilla
Pulsatilla is a genus that contains about 40 species of herbaceous perennial plants native to meadows and prairies of North America, Europe, and Asia. Common names include pasque flower, wind flower, prairie crocus, Easter flower, and meadow anemone. Several species are valued ornamentals because of their finely-dissected leaves, solitary bell-shaped flowers, and plumed seed heads. More on Wikipedia ›
Quoted from Wikipedia, "Pulsatilla", CC BY-SA 4.0.
Cultivation
Seasons
The rain rule reads a summer growing season: 70% of the median year's rain (509 mm of 724 mm) falls in April to September, warmer than the year (wet-season mean 4.2 °C against a yearly mean of -4.0 °C). Months are the habitat's, northern hemisphere; shifted six months for a southern-hemisphere collection: October to March.
Rain
724 mm in the median year at the habitat, 509 mm of it April to September. Wettest months (2 at 105 mm), driest month January at 24 mm. Across the grid cells of the range the year's total runs 330 mm to 1,461 mm, the 10th to 90th percentile of each cell's own year. The median of the cells' own yearly totals, 753 mm, is the year's rain at the top of the page; the 724 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: 12 to 44 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 7, the highest 90th-percentile month 49).
Warmth and air
Coldest: the 1st-percentile night over 44 years at a typical spot in the range is -30.9 °C, the absolute minimum -41.7 °C, 9,772 frost nights in 44 years, 222.1 a year (NASA POWER daily minima). Warmest: the 99th-percentile day is 28.3 °C. Monthly means: the coldest month's mean nightly low -21.3 °C in January (across the grid cells of the range -29.7 °C to -16.4 °C), the warmest month's mean daily high 13.6 °C in July (median year across the grid cells of the range, CHELSA). Cold floor: -30.9 °C, which is the 1st-percentile night over 44 years at a typical spot in the range (NASA POWER).
Relative humidity at the habitat: 56 to 59% 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 -350 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
Mean daily high from -12 °C in Jan and Dec to 14 °C in Jul; mean nightly low from -21 °C in Jan to 4 °C in Jul. The cold quarter, Dec to Feb, is the three months around the coldest month's mean nightly low. 724 mm of rain in the median year (the twelve monthly medians added), the wettest months (2 at 105 mm). The bands show the 10th to 90th percentile across 85 habitat cells. Over 44 years at a typical spot in the range (NASA POWER) the absolute minimum was -41.7 °C and the 99th-percentile day 28.3 °C; neither is dated to a month. Beneath: daily light integral and relative humidity through the year, each on its own scale.
Figures by month
| Figure | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day °C | -12 / -20–-8 | -10 / -16–-5 | -6 / -11–-1 | 0 / -5–5 | 6 / 1–10 | 11 / 8–15 | 14 / 11–17 | 13 / 10–17 | 8 / 4–13 | 0 / -4–5 | -7 / -14–-2 | -12 / -20–-7 |
| Night °C | -21 / -30–-16 | -20 / -28–-15 | -15 / -23–-10 | -9 / -16–-5 | -5 / -9–0 | 0 / -3–5 | 4 / 0–8 | 3 / -1–7 | -3 / -8–2 | -10 / -17–-5 | -16 / -24–-10 | -20 / -28–-14 |
| Rain mm | 24 / 6–59 | 26 / 5–70 | 42 / 5–131 | 65 / 15–178 | 105 / 25–211 | 105 / 56–167 | 103 / 63–170 | 79 / 44–126 | 52 / 20–80 | 51 / 14–116 | 40 / 9–96 | 32 / 9–75 |
| DLI | 14 / 9–19 | 21 / 17–26 | 31 / 27–36 | 40 / 36–45 | 44 / 39–49 | 43 / 41–48 | 40 / 38–45 | 37 / 34–41 | 30 / 27–35 | 22 / 17–26 | 15 / 10–19 | 12 / 7–16 |
| RH % | 56 / 52–62 | 57 / 53–61 | 57 / 54–59 | 56 / 53–58 | 58 / 54–60 | 58 / 56–61 | 59 / 57–62 | 58 / 56–61 | 57 / 55–60 | 56 / 54–59 | 56 / 52–61 | 56 / 52–64 |
How this section is made
Natural habitat
How this section is made
Photographs
Photographs: Svyatoslav Knyazev, CC BY, iNaturalist via GBIF; Pavel Smirnov, CC BY, iNaturalist via GBIF; Natalia Kazakova, CC BY, iNaturalist via GBIF.
Related
Similar habitat climate The 6 nearest by mean daily high, mean nightly low and rain, month by month. How.
Aconitum rotundifolium Roundleaf Monkshood Photo: CC BY, Andrew Bazdyrev
Erigeron aurantiacus Orange daisy Photo: CC BY, Paul Dufour
Geranium saxatile Geraniaceae Photo: CC0, Federico Biguzzi
Tulipa heterophylla Liliaceae Photo: CC BY, b166er
Lonicera hispida Caprifoliaceae Photo: CC BY, Urgamal Magsar
Trollius dschungaricus Ranunculaceae Photo: CC BY, Oleg KosterinOther Pulsatilla 27 in the reference
Pulsatilla albana Ranunculaceae Photo: CC BY, Maria Khoreva
Pulsatilla alpina Ranunculaceae Photo: CC BY-SA, Emanuele Santarelli
Pulsatilla ambigua Ranunculaceae Photo: CC BY, Rose Zappa
Pulsatilla armena Ranunculaceae Photo: CC BY, Oleksandr Shynder
Pulsatilla aurea Ranunculaceae Photo: CC BY, Виктория Билоус
Pulsatilla bungeana Ranunculaceae Photo: CC BY, Urgamal Magsar
Pulsatilla cernua Narrow-leaf pasque-flower Photo: CC BY, Tatyana Petrenko
Pulsatilla chinensis Northeast Asian pasque-flower Photo: CC BY, Tatyana Petrenko
Pulsatilla dahurica Dahurian pasque-flower Photo: CC BY, Tatyana Petrenko
Pulsatilla georgica Ranunculaceae Photo: CC BY, Mikhail Morozov
Pulsatilla grandis Greater Pasque Flower Photo: CC BY, fmunoz all 28 ›Names & registers
Also known as Anemone campanella; Pulsatilla albana var. altaica; Pulsatilla albana var. campanella; Pulsatilla albana var. parviflora; Pulsatilla ambigua subsp. campanella and 1 more. (GBIF Backbone)
The record
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 answeredasked 2026-10-22gbif.synonyms answeredasked 2026-10-22gbif.vernacular answeredasked 2026-10-22names fetched 2026-10-22wcvp.distribution answeredas of 2026-06-04gbif.occurrences answeredas of 2026-10-21GBIF occurrence download https://doi.org/10.15468/dl.hbdw64, of 2026-10-21climate answeredasked 2026-10-22climate.extremes answeredasked 2026-10-22NASA POWER (MERRA-2) daily 1981–2024, cell 50.50_86.875, lapse-corrected -350 m at 6.5 °C/kmwikidata answeredasked 2026-10-22found by its label; its IPNI identifier 711956-1 is Kew's for Pulsatilla campanella (Regel & Tiling) Fisch. ex Krylovwikipedia nothing to reportasked 2026-10-22inat.taxon not askedinat.photos.wild not askedinat.photos.cultivated not askedgbif.media answeredasked 2026-10-22commons nothing to reportasked 2026-10-22openalex not askednot yet asked for this reference; a later fill takes the papers from OpenAlex's snapshotEvery 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 15 datasets via GBIF.org; each carries its own licence.



