Phytolacca heterotepalaH.Walter

Mexican pokeweed

WFO wfo-0001091543 Accepted WFO 2026-06 8 photographs CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Phytolacca heterotepala, photographed by Daniel Cahen
fig. a Daniel Cahen, CC BY 4.0 / 2022-03-16 / obs. 183176033

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 1 botanical country

Regions where Phytolacca heterotepala is native: Mexico Northeast Mexico Northeast
Native distribution of Phytolacca heterotepala, 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
Mexico Northeast MXE NORTHERN AMERICA

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.

Flowering 220 in flower of 269 examined

Proportion of examined Phytolacca heterotepala in flower, by month
Month In flower Examined Share 95% interval
Jan 14 19 74% 51% to 88%
Feb 16 20 80% 58% to 92%
Mar 24 32 75% 58% to 87%
Apr 32 36 89% 75% to 96%
May 21 22 95% 78% to 99%
Jun 23 26 88% 71% to 96%
Jul 12 17 71% 47% to 87%
Aug 7 9 78% 45% to 94%
Sep 14 17 82% 59% to 94%
Oct 15 20 75% 53% to 89%
Nov 25 28 89% 73% to 96%
Dec 17 23 74% 54% to 87%

Peak flowering in May. Each bar is the share of Phytolacca heterotepala observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 220 of 269 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.

Where it actually grows measured, from 1,201 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low 4.5 °C 7.3 °C 10.9 °C
Warmest month, mean daily high 20.1 °C 24.6 °C 28.6 °C
Annual rainfall 608 mm 741 mm 1,520 mm
Rainfall in the driest quarter 6 mm 25 mm 119 mm

It is barely found anywhere that freezes. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 1,201 research-grade observations of Phytolacca heterotepala 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. Climate from CHELSA V2.1 (Karger et al. 2017); occurrences from 10.15468/dl.cgje2x.

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.