Thelymitra megacalyptra, the large-capped thelymitra or plains sun orchid, is a tuberous terrestrial orchid from eastern Australia that bears up to fifteen scented blue to purplish flowers that open on sunny days. It is a wild species that is rarely grown in gardens, and it needs its native open forest, heath or scrub conditions and a dormant summer to thrive.
Family
Orchidaceae (Orchid family)
Grows as
Orchid
Light
Part shade, Full sun
Water
Water moderately while in active growth in winter and spring, and keep nearly dry during the summer dormancy.
Soil
Free-draining, sandy or gritty soil with added leaf litter or humus.
Temperature
Cool to mild temperatures suit it; protect from hard frost and extreme summer heat.
How easy
Hard
Native range
SE. Australia
Climate
subtropical
About
Thelymitra megacalyptra, known as Thelymitra megcalyptra in Australia, and commonly known as plains sun orchid, is a species of orchid that is endemic to eastern Australia. It has a single erect, fleshy leaf and up to fifteen blue to purplish, sometimes lilac, pink or white flowers with white tufts on top of the anther.
Where it grows
Thelymitra megacalyptra grows in forest, heath and scrubland, sometimes forming large colonies. It occurs in New South Wales south from the Mount Kaputar National Park, in the Australian Capital Territory, in drier parts of Victoria and in the south-east of South Australia.
Text excerpted from the Wikipedia article Thelymitra megacalyptra 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.