Anoectochilus siamensis x roxburghii is a medium-sized terrestrial orchid, measuring about 20 to 30 centimeters in height. It has dark green, thick, slightly wavy leaves with white veins running through it. The leaves are arranged oppositely on the stem, giving the plant a symmetrical appearance. Flowering occurs in spring or summer and consists of small greenish-yellow flowers with dark red spots on the petals and sepals.

Optimal growing conditions:

Anoectochilus siamensis x roxburghii is a relatively easy plant to grow if the proper growing conditions are provided. Here are the optimal growing conditions:

Light: This orchid prefers medium to bright indirect light. Avoid direct, intense light which can scorch the leaves.

Temperature: Ideal temperatures for Anoectochilus siamensis x roxburghii are between 18 and 24 degrees Celsius during the day, with a slight drop at night. The plant can tolerate higher temperatures but avoid temperatures below 15 degrees Celsius.

Hygrometry: this orchid needs a high level of humidity to thrive. Maintain a relative humidity of approximately 60-80%.

Substrate: the plant prefers a well-drained substrate that remains moist. Use a mixture of orchid potting soil, sphagnum moss and perlite to ensure good root aeration.

Watering: water regularly, keeping the substrate moist, but avoid overwatering to prevent root rot.

Fertilization: Apply a balanced orchid fertilizer every two weeks during the plant's active growth period.

In summary, Anoectochilus siamensis x roxburghii is an easy-to-grow terrestrial orchid, requiring medium to high indirect light, moderate temperature, high humidity, a well-drained substrate and regular, moderate watering.