Rhynchostylis Retusa

Rhynchostylis retusa (also called foxtail orchid) is an orchid belonging to the Vanda alliance. The inflorescence is a pendant raceme, consisting of more than 100 pink-spotted white flowers. The plant has a short, stout, creeping stem carrying up to 12, curved, fleshy, deeply channeled, keeled, retuse apically leaves and blooms on an axillary pendant to 60 cm (24 in) long, racemose, densely flowered, cylindrical inflorescence that occurs in the winter and early spring.

Rhynchostylis retusa, commonly known as the foxtail orchid due to its dense, drooping, cylinder-shaped clusters of flowers, is a highly fragrant and visually striking epiphytic orchid native to South and Southeast Asia. It is particularly famous in Northeast India, where it is the state flower of Assam (locally known as Kopou Phul) and plays a vital role in the traditional Rongali Bihu festival.

The plant is an epiphyte growing on tree trunks in open forests or at forest margins at elevations of 300–1,500 m (980–4,920 ft).

Key Characteristics

• Flowers: Produces 100 to over 200 small, deeply fragrant flowers that are typically white with vibrant pink or purple spots. The lip is usually a deep purplish-pink.
• Blooming Season: Blooms primarily in the spring and early summer (April to June), depending on regional climates.
• Growth Habit: It is a monopodial epiphyte, meaning it grows on the trunks of host trees, absorbing moisture and nutrients from the air through thick, fleshy aerial roots.

Cultivation & Care

Because they are epiphytes, foxtail orchids require specialized care to mimic their natural, airy tropical environment.

• Light: Grow in bright, filtered, or diffused sunlight. Avoid direct afternoon sun, which can easily scorch the thick leaves.
• Watering: Requires abundant water during the active growing season (spring and summer), but the roots must dry out quickly. Because of this, they are best grown bare-root in wooden slatted baskets or mounted on cork rather than potted in dense soil. Reduce watering in the cooler winter months.
• Air & Humidity: Constant air circulation is essential to prevent root rot and fungal diseases. They thrive in high humidity (ideally 70% to 80%).
• Fertilizer: Feed with a dilute, balanced orchid fertilizer every week or two during the active growth period.

Cultural & Medicinal Significance

In Assam, Rhynchostylis retusa is highly revered as an emblem of cultural identity. Young women weave the sprays into their hair during the Bihu spring dances. Traditional tribal medicine across Northeast India also utilizes extracts of the plant as a tonic and for wound healing.