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Giant Orchid

Himantoglossum robertianum

Giant Orchid
Photo: (Hans Hillewaert), CC BY-SA 3.0

Giant orchid is a bulbous terrestrial orchid native to the Mediterranean Basin, grown mainly in its native habitat rather than as a houseplant. It thrives in alkaline, calcareous soils in open, sunny grassland and scrub.

Family
Orchidaceae (Orchid family)
Grows as
Orchid
Light
Full sun, Part shade
Water
Water sparingly during the spring growing season and keep dry while dormant in summer.
Soil
Alkaline, free-draining, calcareous soil or gritty mix with lime.
Temperature
Hardy to mild frosts; tolerates Mediterranean summer heat when dormant.
How easy
Hard
Native range
Medit.
Climate
subtropical

About

Himantoglossum robertianum is a species of flowering plant in the orchid family (Orchidaceae) native to the Mediterranean Basin. It is commonly known as the giant orchid.

Where it grows

Himantoglossum robertianum is native to the Mediterranean Basin and is found in Portugal, Morocco, Spain, Balearic Islands, France, Italy, Sardinia, Corsica, Algeria, Libya, Croatia, Montenegro, the Greek mainland, the Aegean Islands and Crete, Anatolia and Cyprus. It is found in short, poor grassland, garrigue, scrub, and open woodland. It prefers dry to moist, alkaline and calcareous substrates. It can be found up to 1,700 m (5,600 ft) altitude.

Other Himantoglossum plants

Adriatic lizard orchid · Goat’s Tongue Orchid · Lizard orchid · Himantoglossum

Text excerpted from the Wikipedia article Himantoglossum robertianum 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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