Myrica galeL.

Bog-myrtlesweetgale

WFO wfo-0000447393 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Myrica gale, photographed by Jack Forrester
fig. a Jack Forrester, CC BY 4.0 / 2022-06-13 / obs. 205820438

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 53 botanical countries

Regions where Myrica gale is native: Japan, Kamchatka, Khabarovsk, Kuril Is., Magadan, Primorye, Sakhalin, Baltic States, Belgium, Denmark, Finland, France, Germany, Great Britain, Ireland, Netherlands, North European Russia, Northwest European Russia, Norway, Poland, Portugal, Spain, Sweden, Alaska, Alberta, British Columbia, Connecticut, Labrador, Maine, Manitoba, Massachusetts, Michigan, Minnesota, New Brunswick, New Hampshire, New Jersey, New York, Newfoundland, North Carolina, Northwest Territories, Nova Scotia, Nunavut, Ontario, Oregon, Pennsylvania, Prince Edward I., Québec, Rhode I., Saskatchewan, Vermont, Washington, Wisconsin, Yukon JapanKamchatkaKhabarovskMagadanPrimoryeSakhalinBaltic StatesBelgiumDenmarkFinlandFranceGermanyIrelandNetherlandsNorth European RussiaNorthwest European RussiaNorwayPolandPortugalSpainSwedenAlaskaAlbertaBritish ColumbiaConnecticutLabradorMaineManitobaMassachusettsMichiganMinnesotaNew BrunswickNew HampshireNew JerseyNew YorkNewfoundlandNorth CarolinaNorthwest TerritoriesNova ScotiaNunavutOntarioOregonPennsylvaniaPrince Edward I.QuébecSaskatchewanVermontWashingtonWisconsinYukon Rhode I.
Native distribution of Myrica gale, 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. Regions too small to draw at this scale are marked with a dot.
RegionTDWG codeContinent
Alaska ASK NORTHERN AMERICA
Alberta ABT
British Columbia BRC
Connecticut CNT
Labrador LAB
Maine MAI
Manitoba MAN
Massachusetts MAS
Michigan MIC
Minnesota MIN
New Brunswick NBR
New Hampshire NWH
New Jersey NWJ
New York NWY
Newfoundland NFL
North Carolina NCA
Northwest Territories NWT
Nova Scotia NSC
Nunavut NUN
Ontario ONT
Oregon ORE
Pennsylvania PEN
Prince Edward I. PEI
Québec QUE
Rhode I. RHO
Saskatchewan SAS
Vermont VER
Washington WAS
Wisconsin WIS
Yukon YUK
Baltic States BLT EUROPE
Belgium BGM
Denmark DEN
Finland FIN
France FRA
Germany GER
Great Britain GRB
Ireland IRE
Netherlands NET
North European Russia RUN
Northwest European Russia RUW
Norway NOR
Poland POL
Portugal POR
Spain SPA
Sweden SWE
Japan JAP ASIA-TEMPERATE
Kamchatka KAM
Khabarovsk KHA
Kuril Is. KUR
Magadan MAG
Primorye PRM
Sakhalin SAK

Not drawn on the map: Kuril Is., Great Britain. We hold no public-domain boundary for these regions, so they are listed rather than guessed at.

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 193 in flower of 1,034 examined

Proportion of examined Myrica gale in flower, by month
Month In flower Examined Share 95% interval
Jan 1 14 7% 1% to 31%
Feb 0 17 0% 0% to 18%
Mar 7 27 26% 13% to 45%
Apr 44 87 51% 40% to 61%
May 90 139 65% 57% to 72%
Jun 20 102 20% 13% to 28%
Jul 18 222 8% 5% to 12%
Aug 7 182 4% 2% to 8%
Sep 6 171 4% 2% to 7%
Oct 0 55 0% 0% to 7%
Nov 0 10 0% 0% to 28%
Dec 0 8 0% 0% to 32%

Peak flowering in May. Each bar is the share of Myrica gale 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. 193 of 1,034 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 2,021 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -18.9 °C -10.1 °C 3.1 °C
Warmest month, mean daily high 16.0 °C 22.3 °C 25.8 °C
Annual rainfall 695 mm 1,128 mm 3,174 mm
Rainfall in the driest quarter 87 mm 212 mm 401 mm

It is found where winters are severely cold. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 2,021 research-grade observations of Myrica gale 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 26 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.

  • Gale belgica Dumort.
  • Gale commune J.Presl
  • Gale japonica A.Chev.
  • Gale palustris A.Chev.
  • Gale palustris var. crenata A.Chev.
  • Gale palustris var. denticulata A.Chev.
  • Gale palustris var. lusitanica A.Chev.
  • Gale palustris var. subglabra A.Chev.
  • Gale palustris var. tomentosa (C.DC.) A.Chev.
  • Gale portugalensis A.Chev.
  • Gale uliginosa Spach
  • Myrica algarbiensis Gand.
  • Myrica brabantica Gray
  • Myrica gale f. pubescens J.Rousseau & Rouleau
  • Myrica gale subsp. tomentosa (C.DC.) A.E.Murray
  • Myrica gale var. gale
  • Myrica gale var. portugalensis Mirb. ex C.DC.
  • Myrica gale var. subarctica J.Rousseau
  • Myrica gale var. subglabra (A.Chev.) Fernald
  • Myrica gale var. tomentosa C.DC.
  • Myrica palustris Lam.
  • Myrica palustris var. subglabra A.Chev.
  • Myrica rothmaleriana P.Silva
  • Myrica tomentosa (C.DC.) Asch. & Graebn.

and 2 more.

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.