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Frog orchid

Dactylorhiza viridis

Also called Frog Orchis, Long Bract Green Orchis, Longbract Frog Orchid

Frog orchid
Photo: Hans Hillewaert, CC BY-SA 3.0

A hardy terrestrial orchid of cool northern regions, with greenish flowers tinged purple or red-brown on a dense spike. It grows best in moist, rich soil in cool, shaded or partly shaded meadows and woodland edges.

Family
Orchidaceae (Orchid family)
Grows as
Orchid
Light
Part shade
Water
Keep the soil consistently moist during the growing season, avoiding waterlogging.
Soil
Moist, rich, humus-heavy soil or a peaty, well-drained mix.
Temperature
Hardy to cold winters; thrives in cool summers, roughly 5–20 °C.
How easy
Hard
Native range
Subarctic & Subalpine Northern Hemisphere
Climate
temperate

About

Dactylorhiza viridis, the frog orchid, is a species of flowering plant in the orchid family Orchidaceae. It has also been treated as the only species Coeloglossum viride of the monotypic genus Coeloglossum.

Safety

The chemistry of a variety that has been known as bracteatum is complex, featuring a wealth of bioactive constituents, at least seven of which are peculiar to the plant. Known compounds found thus far to be present are 4-hydroxybenzaldehyde, 4-hydroxybenzyl alcohol (=Gastrodigenin), 4,4'-dihydroxydibenzyl ether, 4,4'-dihydroxydiphenylmethane (see Xenoestrogen), 4-(4-hydroxybenzyloxy)benzyl alcohol, gastrodin, quercetin-3,7-diglucoside (see Flavonol glycoside), thymidine, loroglossin, militarine, dactylorhin A, dactylorhin B, β-Sitosterol and daucosterol.

Where it grows

Dactylorhiza viridis has a wide distribution across the cooler parts of the Northern Hemisphere, covering much of Europe, non-tropical Asia (Russia, Japan, China, the upper Himalayas, etc.), much of Canada and parts of the United States (Alaska, Northeast, the Appalachians, Great Lakes Region, Northern Great Plains, and Rocky Mountains). It is typically found growing in moist, rich soil in wet meadows, moist or wet deciduous woods and thickets, and is frequently found on steep slopes.

Other Dactylorhiza plants

Keyflower · Dactylorhiza majalis subsp. baltica · Dactylorhiza cantabrica · Stately Dactylorhiza · Richly-Leaved Dactylorhiza · Dactylorhiza francis-drucei · Common spotted orchid · Dactylorhiza hatagirea · Dactylorhiza iberica · Flecked Marsh Orchid · Early marsh-orchid · Dactylorhiza insularis

Text excerpted from the Wikipedia article Dactylorhiza viridis by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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