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Species library › Dendrobium › Dendrobium guamense
Orchids Partly documented

Dendrobium guamense

A small epiphytic Dendrobium endemic to Guam and the Northern Mariana Islands, listed as Threatened under the US Endangered Species Act, with only about 550 plants in nine known populations. It has narrow leaves about 10 cm long and produces pairs of small white flowers that last a single day. Grow it warm, humid and bright-shaded year round, on a mount with good air movement.

Dendrobium guamense
Photo: James Lucas, CC BY-SA 4.0, via Wikimedia Commons
At home, aim for
Day Warm-growingTargets in Plantistry
Night Close to the dayTargets in Plantistry
Humidity Humid airBand in Plantistry
Light Dappled lightDLI and PPFD in Plantistry
No rest periodGrows on trees (epiphyte)

Where it grows wild

An epiphyte on trees in native forest, including limestone forest and riverside trees; one recent observation was on Terminalia catappa at a river bank. The islands are warm, humid and swept by trade winds.

Lowland to the upper plateaus of small oceanic islands, below about 500 m.

GuamNorthern Mariana Islands: Rota, Tinian and Saipan

🔒 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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More Dendrobium

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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 4.0 licence, unmodified.