Phalaenopsis ubonensis

A hot-growing, rock-dwelling Phalaenopsis from the lowlands of north-eastern Thailand and Laos, formerly Doritis ubonensis. It is related to P. pulcherrima but has larger lavender-to-rose flowers, carried on tall, upright spikes in summer and autumn. It needs heat, bright light and a monsoon rhythm of wet summers and drier winters.

At home, aim for

Day Warm-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 on rock (lithophyte)

Where it grows wild

A lithophyte in tropical lowland forest, on rocks in areas such as the sandstone country of Pha Taem National Park by the Mekong. Its close relatives in the Doritis group grow in moss and humus pockets on rock, fairly exposed to light.

About 150–400 m.

Thailand (Ubon Ratchathani)Laos

🔒 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.