Eutrochium dubium, Broad Channel, Queens, NY, USA

Eutrochium dubium (Willd. ex Poir.) E.E.Lamont

Coastal Plain Joe-pyeweed, Coastal Plain Joepyeweed, Coastal plain joepyeweed, Joe-pye Thoroughwort

Climate known 103 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

Eutrochium dubium, also called coastal plain joe pye weed, is a North American flowering plant in the family Asteraceae. It is native to the eastern United States and Canada, primarily the Atlantic coastal plain from Georgia to Nova Scotia.

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

About the genus · Eutrochium

Eutrochium is a North American genus of herbaceous flowering plants in the family Asteraceae. They are commonly referred to as Joe-Pye weeds. They are native to the United States and Canada, and have non-dissected foliage and pigmented flowers. More on Wikipedia ›

The opening of Wikipedia, “Eutrochium”, CC BY-SA 4.0, quoted as written.

Family

Asteraceae

Described by

(Willd. ex Poir.) E.E.Lamont

Native to

Nova Scotia, Connecticut, Maine +12

Wild records

1680 in range· 371 open

At a glance

Warmest month

28°C

Jul, mean day; nights 20 °C (CHELSA)

Rain

1237mm/yr

12 wet months · peak Jul 111 mm (CHELSA)

Light

11–39DLI

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: no season, 70% of the rain takes 9 months (March to October and December in the northern hemisphere). Habitat rain 1237 mm a year, wettest July at 111 mm, driest February at 87 mm (habitat calendar, northern hemisphere). Open sky over the habitat: 11 to 39 mol/m²/day. Cold floor -14.0 °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 Eupatoriadelphus dubius (Willd. ex Poir.) R.M.King & H.Rob.; Eupatorium americanum Hill; Eupatorium dubium Willd.; Eupatorium dubium Willd. ex Poir.; Eupatorium dubium f. dubium and 10 more.

Cultivation

Its year Rain rule: no season, 70% of the rain takes 9 months (March to October and December in the northern hemisphere).

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

The rain rule reads no season: 70% of the year's rain (958 mm of 1237 mm) takes 9 months, March to October and December. Mean temperature moves 23.5 °C between the warmest and coldest month. Months are the habitat's, northern hemisphere; shifted six months for a southern-hemisphere collection: September to April and June.

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 1237 mm a year, wettest July at 111 mm, driest February at 87 mm (habitat calendar, northern hemisphere).

This species’ habitat figures, with their source.

1237 mm a year at the habitat, 958 mm of it March to October and December. Wettest month July at 111 mm, driest February at 87 mm. Across the envelope cells the year's total runs 1146 mm to 1373 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: 11 to 39 mol/m²/day.

This species’ habitat figures, with their source.

Open sky over the habitat: 11 to 39 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 41).

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 -14.0 °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 -14.0 °C, the absolute minimum -22.7 °C, about 104 frost nights a year (NASA POWER daily minima). Warmest: the 99th-percentile day is 32.2 °C. Monthly means: coldest night -3.7 °C in January (across the envelope cells -8.0 °C to 1.1 °C), warmest day 28.0 °C in July (median year across the envelope cells, CHELSA). Cold floor: -14.0 °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: 56 to 60% 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 1046 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	3 / 1–9	4 / 2–10	8 / 6–14	15 / 11–20	20 / 16–24	25 / 22–29	28 / 25–31	27 / 24–29	23 / 21–26	17 / 15–21	11 / 9–16	6 / 3–11
Night °C	-4 / -8–1	-3 / -7–2	1 / -3–5	6 / 3–10	11 / 9–15	16 / 14–20	20 / 18–22	19 / 17–22	16 / 13–19	10 / 7–13	5 / 2–8	-1 / -4–3
Rain mm	89 / 81–101	87 / 74–100	108 / 98–126	107 / 86–122	103 / 93–114	107 / 97–121	111 / 96–137	108 / 93–131	105 / 95–123	105 / 87–124	103 / 81–124	104 / 89–119
DLI	14 / 13–16	20 / 19–21	26 / 25–28	33 / 31–36	37 / 35–39	39 / 38–41	38 / 38–40	34 / 33–35	28 / 27–29	21 / 19–23	14 / 13–17	11 / 10–14
RH %	57 / 56–59	56 / 55–57	56 / 55–57	56 / 55–58	58 / 56–60	59 / 58–62	59 / 57–63	60 / 58–63	60 / 58–62	58 / 57–60	58 / 56–60	57 / 56–59

Each figure is the median across the 1046 grid cells holding the 1550 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 972:2161 (41.375, -71.925). Over 44 years there: absolute minimum -22.7 °C, 1st-percentile night -14.0 °C, 99th-percentile day 32.2 °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 1046 distinct grid cells holding the 1550 in-range records; extremes and elevation at the typical cell 972:2161 (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 41.50_-71.875, lapse-corrected -43 m at 6.5 °C/km. Elevation: ETOPO 2022, 30 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.

NativeNova Scotia, Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode I., Vermont, Delaware, Maryland, North Carolina, South Carolina, Virginia

Map marker42.086, -71.719 · in the densest population, 1334 records (79% of those in range)

Evidence usedThe map marker and the climate envelope rest on all 1680 georeferenced records inside the native range; the map shows only the 371 openly licensed ones, which alone would put the marker 21 km away. 15 records outside the range (gardens, roadsides, misidentifications) ignored. 130 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 2° block of the 1680 in-range records; it decides nothing.

Photographs

Photographs: (c) Dilrukshan Priyantha Wijesinghe, some rights reserved (CC BY) (7); (c) Bonnie Semmling, 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 Eutrochium dubium, most cited first, from OpenAlex (CC0). A mention, not a cultivation source: nothing on this page is drawn from them.

Vegetation and Media Characteristics of an Effective Bioretention Cell

Claire P. Muerdter, Enes Özkök, Liqing Li, Allen P. Davis (2015) · Journal of Sustainable Water in the Built Environment

Impact of vegetation selection on nitrogen and phosphorus processing in bioretention containers

Claire P. Muerdter, Daniel J. Smith, Allen P. Davis (2019) · Water Environment Research

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