Plate 1 figs. a–h · 8 separate observations
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 8 botanical countries
| Region | TDWG code | Continent |
|---|---|---|
| Mexico Gulf | MXG | NORTHERN AMERICA |
| Mexico Northeast | MXE | |
| Mexico Northwest | MXN | |
| Mexico Southeast | MXT | |
| Mexico Southwest | MXS | |
| El Salvador | ELS | SOUTHERN AMERICA |
| Guatemala | GUA | |
| Nicaragua | NIC |
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.
Where it actually grows measured, from 264 observations
| Condition | 5th percentile | Median | 95th percentile |
|---|---|---|---|
| Coldest month, mean daily low | 9.4 °C | 13.3 °C | 21.2 °C |
| Warmest month, mean daily high | 29.8 °C | 33.9 °C | 36.8 °C |
| Annual rainfall | 734 mm | 854 mm | 1,301 mm |
| Rainfall in the driest quarter | 6 mm | 13 mm | 28 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 264 research-grade observations of Cucurbita argyrosperma 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 Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.
Also published as 14 synonyms
A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.
- Cucurbita argyrosperma subsp. sororia (L.H.Bailey) Merrick & D.M.Bates
- Cucurbita argyrosperma var. callicarpa Merrick & D.M.Bates
- Cucurbita argyrosperma var. palmeri (L.H.Bailey) Merrick & D.M.Bates
- Cucurbita argyrosperma var. stenosperma (Pangalo) Merrick & D.M.Bates
- Cucurbita cyanoperizona (Pangalo) Bukasov
- Cucurbita kellyana L.H.Bailey
- Cucurbita mixta Pangalo
- Cucurbita mixta var. cyanoperizona Pangalo
- Cucurbita mixta var. stenosperma Pangalo
- Cucurbita moschata var. argyrosperma (C.Huber) Naudin
- Cucurbita palmeri L.H.Bailey
- Cucurbita pepo var. sororia (L.H.Bailey) Filov
- Cucurbita sororia L.H.Bailey
- Cucurbita stenosperma (Pangalo) Bukasov
Sourcesevery claim on this page
- World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
- iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
- USDA PLANTS Database. common name, checklist symbol CUMI3. public domain. Retrieved 2026-07-13.
- 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.