Symphyotrichum oblongifolium, Washington, Minnesota, United States

Symphyotrichum oblongifolium (Nutt.) G.L.Nesom

Fall Aster, Oblong-leaved or aromatic aster, aromatic aster, aromatic aster

Climate known 69 photographs

Every figure on this page is derived from public data by a stated rule and says its source; nothing here is written by a person or a model, except the Wikipedia passage, which is quoted and marked as such. How it is made.

Summary

Symphyotrichum oblongifolium, commonly known as aromatic aster or oblong-leaved aster, is a species of flowering plant in the family Asteraceae and is native to parts of the eastern and central United States. It is an uncommon herbaceous perennial that reaches heights of 10–80 centimeters and blooms August–November with many flower heads in various shades of purple.

Text from Wikipedia, “Symphyotrichum oblongifolium”, CC BY-SA 4.0, quoted as written. Kept separate from everything derived here.

About the genus · Symphyotrichum

Symphyotrichum is a genus of over 100 species and naturally occurring hybrids of herbaceous annual and perennial plants in the composite family, Asteraceae, most which were formerly treated within the genus Aster. The majority are endemic to North America, but several also occur in the West Indies, Central and South America, as well as one species in eastern Eurasia. Several species have been introduced to Europe as garden specimens, most notably New England aster and New York aster.

Text from Wikipedia, “Symphyotrichum”, CC BY-SA 4.0, quoted as written.

Family

Asteraceae

Described by

(Nutt.) G.L.Nesom

Native to

Colorado, Montana, Wyoming +25

Wild records

1702 in range· 804 open

At a glance

Warmest month

31°C

Jul, mean day; nights 21 °C (CHELSA)

Rain

902mm/yr

12 wet months · peak Jun 112 mm (CHELSA)

Light

13–42DLI

mol/m²/day, winter to summer, open sky (CHELSA shortwave)

In short condensed by rule from the cultivation cards · not written by a person

Rain rule: a summer growing season, April to October in the northern hemisphere (April to October at the habitat, northern). Habitat rain 902 mm a year, wettest June at 112 mm, driest January at 33 mm (habitat calendar, northern hemisphere). Open sky over the habitat: 13 to 42 mol/m²/day. Cold floor -16.8 °C (1st-percentile habitat night, NASA POWER).

Each sentence is one card's own one-line form, written by the same rule as the card (Its year, Rain, Light, Temperature); the note cannot say what a card does not. Months are given for the northern hemisphere (set your site in Settings to change this), and the habitat's own alongside. The cards · the figures.

Also known as Aster graveolens Nutt.; Aster graveolens var. graveolens; Aster kumleinii Fr.; Aster kumleinii Fr. ex A.Gray; Aster kumleinii Fr. ex E.S.Burgess and 19 more.

Cultivation

Its year Rain rule: a summer growing season, April to October in the northern hemisphere (April to October at the habitat, northern).

This species’ habitat figures, and what two fixed rules read from them.

The rain rule reads a summer growing season: 70% of the year's rain (656 mm of 902 mm) falls in April to October, warmer than the year (wet-season mean 19.6 °C against a yearly mean of 12.7 °C). Months are the habitat's, northern hemisphere; shifted six months for a southern-hemisphere collection: October to April.

Read from the median year of CHELSA monthly rainfall and mean temperature across the envelope cells: 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 gives a season to reverse. A reading of the curves, not an observation of the plant.

Rain Habitat rain 902 mm a year, wettest June at 112 mm, driest January at 33 mm (habitat calendar, northern hemisphere).

This species’ habitat figures, with their source.

902 mm a year at the habitat, 656 mm of it April to October. Wettest month June at 112 mm, driest January at 33 mm. Across the envelope cells the year's total runs 525 mm to 1232 mm (10th to 90th percentile of each cell's own year) (median year across the envelope cells, CHELSA; habitat calendar, northern hemisphere).

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

Light Open sky over the habitat: 13 to 42 mol/m²/day.

This species’ habitat figures, with their source.

Open sky over the habitat: 13 to 42 mol/m²/day across the year (daily light integral, median year across the envelope cells, CHELSA; the lowest 10th-percentile month across the cells is 10, the highest 90th-percentile month 45).

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.

Warmth and air Cold floor -16.8 °C (1st-percentile habitat night, NASA POWER).

This species’ habitat figures, with their source.

Temperature

Coldest: the 1st-percentile night over 44 years at the typical cell is -16.8 °C, the absolute minimum -28.8 °C, about 115 frost nights a year (NASA POWER daily minima). Warmest: the 99th-percentile day is 39.1 °C. Monthly means: coldest night -4.7 °C in January (across the envelope cells -12.5 °C to 3.5 °C), warmest day 30.9 °C in July (median year across the envelope cells, CHELSA). Cold floor: -16.8 °C, which is the 1st-percentile night over 44 years at the typical cell (NASA POWER).

NASA POWER daily minima and maxima 1981–2024 at the typical cell, lapse-corrected to its elevation; CHELSA monthly means, median year across the envelope cells, CHELSA. The cold floor is the figure named in its sentence. Not a measured survival limit for any plant in a pot.

Humidity

Relative humidity at the habitat: 55 to 59% across the year (monthly means, median year across the envelope cells, CHELSA). A figure about the air, saying nothing about how the plant takes water.

CHELSA relative humidity, median year across the envelope cells.

The figures the cards read from are in Climate below, and where they came from in Natural habitat.

Climate across the habitat

day night rain 10th–90th percentile across 1160 habitat cells cold quarter: the three months around the coldest night extremes over 44 years at the typical cell, marked at the edge: undated DLI, mol/m²/dayRH %each on its own scale

Figures by month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Day °C	5 / -4–14	8 / -0–16	13 / 6–21	19 / 14–25	24 / 20–29	28 / 25–32	31 / 28–34	30 / 26–34	26 / 22–30	19 / 15–25	12 / 5–19	6 / -2–14
Night °C	-5 / -13–4	-3 / -10–5	2 / -4–9	8 / 2–13	13 / 9–18	18 / 14–22	21 / 17–24	20 / 17–24	16 / 12–20	10 / 5–15	3 / -3–9	-3 / -10–4
Rain mm	33 / 12–82	42 / 14–81	66 / 30–105	85 / 51–113	109 / 77–145	112 / 84–140	100 / 58–120	89 / 51–116	86 / 44–109	75 / 40–108	61 / 20–106	44 / 14–96
DLI	15 / 12–19	21 / 18–23	28 / 26–30	34 / 32–37	37 / 37–40	41 / 40–44	42 / 38–45	38 / 34–41	31 / 27–34	22 / 19–26	16 / 12–20	13 / 10–17
RH %	58 / 56–64	57 / 55–61	56 / 54–58	55 / 53–56	57 / 54–60	57 / 54–60	57 / 52–59	57 / 52–60	57 / 53–59	56 / 54–58	58 / 55–60	59 / 56–63

Each figure is the median across the 1160 grid cells holding the 1519 in-range records, with the 10th–90th percentile span across those cells after the slash where it differs. Extremes and elevation were read at the typical cell 1023:1691 (38.825, -95.425). Over 44 years there: absolute minimum -28.8 °C, 1st-percentile night -16.8 °C, 99th-percentile day 39.1 °C. Normals: CHELSA V2.1 1981–2010 climatology, 0.05° cells (each the mean of ~36 1 km pixels). Envelope: median and 10th–90th percentile of each month across the 1160 distinct grid cells holding the 1519 in-range records; extremes and elevation at the typical cell 1023:1691 (its coldest month's mean night nearest the median across cells); its position is the cell centre. Extremes: NASA POWER (MERRA-2) daily 1981–2024, cell 39.00_-95.625, lapse-corrected +7 m at 6.5 °C/km. Elevation: ETOPO 2022, 324 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 every in-range record's cell, not at the marker.

Openly licensed records inside the range, framed on where they fall.

NativeColorado, Montana, Wyoming, Illinois, Iowa, Kansas, Minnesota, Missouri, North Dakota, Nebraska, Oklahoma, South Dakota, Wisconsin, Indiana, Ohio, Pennsylvania, West Virginia, New Mexico, Texas, Alabama, Arkansas, Kentucky, Maryland, Mississippi, North Carolina, Tennessee, Virginia, Mexico Northeast· introduced: Switzerland

Kew's description“perennial” · “temperate”· quoted from WCVP, RBG Kew (CC BY 4.0); not derived here

Map marker38.499, -96.574 · in the densest population, 1010 records (59% of those in range)

Evidence usedThe map marker and the climate envelope rest on all 1702 georeferenced records inside the native range; the map shows only the 804 openly licensed ones, which alone would put the marker 139 km away. 43 records outside the range (gardens, roadsides, misidentifications) ignored. 183 in-range records are placed to worse than 10 km and stay on the map but off the climate.

The map markerthe map marker: the openly licensed record nearest the middle of the densest 1° population inside the densest 4° block of the 1702 in-range records; it decides nothing.

Photographs

Photographs: (c) harrier, some rights reserved (CC BY) (3); (c) Paul Roots, some rights reserved (CC BY) (3); (c) Jay Pruett, some rights reserved (CC BY); (c) Jared Shorma, some rights reserved (CC BY).

Photographs: iNaturalist did not answer when this page was built; what is shown came from the sources that did.

Papers naming this species

Works whose title or abstract names Symphyotrichum oblongifolium, most cited first, from OpenAlex (CC0). A mention, not a cultivation source: nothing on this page is drawn from them.

Response of 10 Aster Species to Saline Water Irrigation

Shasha Wu, Youping Sun, Genhua Niu, James E. Altland (2016) · HortScience

Salt Tolerance of 22 Pomegranate Cultivars

Shasha Wu, Youping Sun, Genhua Niu, James E. Altland (2015) · Digital Commons - USU (Utah State University)

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