Cypripedium macranthos

A large-flowered lady's slipper of Siberia, the Russian Far East, Mongolia, northern China, Korea and Japan. It has a single big red-pink to purple flower in June–July and is very cold-hardy. It needs a real winter freeze, a cool moist summer and a humus-rich but well-drained soil in light shade.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Ordinary room humidityBand in Plantistry

Light Bright, filtered lightDLI and PPFD in Plantistry

Expects a seasonal restGrows in the ground

Where it grows wild

Meadows, open forest and woodland edges, scrub, riverbanks and grassy slopes, usually in light shade.

Sea level to about 2,400 m; records from 107 to 2,150 m, median 700 m.

RussiaSiberiaRussian Far EastMongoliaChina North-CentralManchuriaKoreaJapanUkraineBelarus

🔒 Growing it like that

The wild conditions above, turned into targets for a shelf, a tent or a greenhouse. The full profile has:

✓ Day and night temperature targets, and the limits it tolerates

✓ Humidity band, and how to hold it

✓ Light as DLI and PPFD for a grow light

✓ Wet and dry seasons, and whether to rest it

✓ Substrate and airflow

✓ A step-by-step setup to grow it like the wild

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Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app. Photo from Wikimedia Commons, used under its CC BY-SA 3.0 licence, unmodified.