Although not widely available or well-known, Coelogyne annamensis formerly [assamica] deserves greater recognition among orchid enthusiasts, not just collectors. With its striking, well-defined markings, this species originates from Bhutan, Northeast India (hence its name referencing Assam), Burma, China, Laos, Vietnam, and Thailand. It thrives as an epiphyte in low-altitude (around 700m), humid river valleys.

Among similar-looking Coelogyne species—including fuscescens, marmorata, and triplicatula—Coelogyne assamica stands out as one of the best. It typically produces eight sizable (7 cm+) flowers per inflorescence, which open simultaneously and are long-lasting. The blossoms emerge in a soft apple-green hue, gradually fading to whitish with age. This compact, clumping plant is robust and easy to cultivate under intermediate conditions, though highly sensitive to cold.

Cultivation Tips

• Temperature: Completely avoid frost, as the plant struggles below 15°C (59°F).
• Light & Humidity: Provide partial shade and maintain high humidity, ensuring regular watering.
• Flower Display: The flower spikes, positioned just below the broad leaves, can be somewhat hidden. To enhance visibility, consider placing the plant in a raised position—such as mounted on a wall, a pedestal, or in a low-hanging basket.
• Indoor Enjoyment: Like many of our orchids, we bring Coelogyne assamica indoors while flowering to fully appreciate its beauty. Once past its peak, we return it to the orchid house.
• Fertilization: As with all Coelogynes, we recommend a light application of slow-release fertilizer (whatever is available) at the start of both spring and autumn.

Challenges

This species is not easy to acquire. However, once obtained, it presents few challenges in warm climates. If temperatures drop below 15°C (59°F), it may shed its leaves, and excessive dampness in cold conditions can be fatal.