Bulbophyllum dayanum

Bulbophyllum dayanum Rchb.f. is an orchid species native to parts of Southeast Asia including India, Myanmar, Cambodia, Vietnam, Thailand, and also southern China (Yunnan & perhaps Malaya). It grows as an epiphyte (on trees) and sometimes as a lithophyte (on rocks), mostly in lowland to lower montane forests (semi-deciduous, deciduous, savanna-like woodlands) from sea level up to about 700-1300 meters elevation.

Features:

• It is a miniature-sized plant.

• Growth habit: creeping rhizome with globose to ovoid, channeled pseudobulbs.

• Leaves: each pseudobulb bears a single apical leaf; the leaf is oblong, leathery (coriaceous), deep green on the upper surface, purple underneath.

• Flower size: about 2–3 cm (≈ ¾–1½ in) across.

• Inflorescence: very short, basal (emerging at the base), with 2–5 flowers. The flowers are held below or beside the leaves, often next to the rhizome.

Care Tips:

• Temperature: Warm to intermediate. Because some of its native range is at elevations up to ~1300 m, it may tolerate cooler nights, though the lower elevations suggest warmth is important.

• Light: Deep shade to filtered light; avoid direct harsh sun.

• Humidity & Moisture: High humidity; keep the media or mounting very moist during active growth. Don’t let the roots dry out too much.

• Growing medium / mounting: Likely does well mounted or in baskets/trays, with bark, maybe moss, or similar substrate that retains moisture but drains well.

• Ventilation: Good air circulation helps reduce risk of rot or fungal issues, especially given the damp shady habitat.