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 45 botanical countries
| Region | TDWG code | Continent |
|---|---|---|
| Albania | ALB | EUROPE |
| Baleares | BAL | |
| Baltic States | BLT | |
| Belarus | BLR | |
| Belgium | BGM | |
| Bulgaria | BUL | |
| Central European Russia | RUC | |
| Corse | COR | |
| Czechia-Slovakia | CZE | |
| East European Russia | RUE | |
| France | FRA | |
| Germany | GER | |
| Greece | GRC | |
| Hungary | HUN | |
| Italy | ITA | |
| Kriti | KRI | |
| Krym | KRY | |
| Northwest European Russia | RUW | |
| NW. Balkan Pen. | YUG | |
| Poland | POL | |
| Portugal | POR | |
| Romania | ROM | |
| Sardegna | SAR | |
| Sicilia | SIC | |
| South European Russia | RUS | |
| Spain | SPA | |
| Sweden | SWE | |
| Türkiye-in-Europe | TUE | |
| Ukraine | UKR | |
| Cyprus | CYP | ASIA-TEMPERATE |
| East Aegean Is. | EAI | |
| Iran | IRN | |
| Iraq | IRQ | |
| Lebanon-Syria | LBS | |
| North Caucasus | NCS | |
| Palestine | PAL | |
| Transcaucasus | TCS | |
| Türkiye | TUR | |
| Algeria | ALG | AFRICA |
| Azores | AZO | |
| Canary Is. | CNY | |
| Libya | LBY | |
| Madeira | MDR | |
| Morocco | MOR | |
| Tunisia | TUN |
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 1,192 in flower of 1,461 examined
Peak flowering in Sep. Each bar is the share of Ballota nigra 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. 1,192 of 1,461 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 2,032 observations
| Condition | 5th percentile | Median | 95th percentile |
|---|---|---|---|
| Coldest month, mean daily low | -11.9 °C | -3.7 °C | 3.1 °C |
| Warmest month, mean daily high | 19.9 °C | 24.1 °C | 28.1 °C |
| Annual rainfall | 506 mm | 627 mm | 912 mm |
| Rainfall in the driest quarter | 82 mm | 114 mm | 172 mm |
It is found where winters bring hard frost. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 2,032 research-grade observations of Ballota nigra 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.
Also published as 43 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.
- Ballota alba L.
- Ballota alba var. borealis (Schweigg.) Nyman
- Ballota ampliata Willd. ex Steud.
- Ballota aristata Rchb.
- Ballota borealis Schweigg.
- Ballota bracteosa Ball
- Ballota foetida Lam.
- Ballota foetida var. glabrescens Boiss.
- Ballota hirta Steud.
- Ballota nigra f. borealis (Schweigg.) Bolzon
- Ballota nigra f. uncinata Bég.
- Ballota nigra subsp. meridionalis (Bég.) Bég.
- Ballota nigra subsp. uncinata (Bég.) Patzak
- Ballota nigra unranked variegata Abbey
- Ballota nigra var. alba (L.) Tinant
- Ballota nigra var. aurea Thys & Antoine
- Ballota nigra var. foetida Vis.
- Ballota nigra var. foetida Boiss.
- Ballota nigra var. meridionalis Bég.
- Ballota nigra var. mollissima Druce
- Ballota nigra var. porrigens (Peterm.) Peterm.
- Ballota nigra var. ruderalis (Sw.) Rchb.f.
- Ballota nigra var. sericea Vandas
- Ballota nigra var. submitis Borbás
and 19 more.
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.
- Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. 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.