Vanda cristata

Vanda cristata is an evergreen orchid in the family Orchidaceae. Its range stretches from the Himalayas to southwest China and Indo-China. It grows on tree trunks in evergreen, broad-leaved forests. These sites lie at 2,300–5,580 feet [700–1,700 metres] above sea level. This perennial is an epiphyte, using trees as a place to grow. Another name for it is Trudelia cristata.

Size reports differ quite sharply between the sources. RHS gives a cultivated height of 3.3–4.9 feet [1–1.5 metres]. Its listed spread is 1.6–3.3 feet [0.5–1 metre]. Useful Tropical Plants describes stems just 0.8 feet [0.25 metres] long. RHS gives five to ten years to reach full size. The plant grows upward from one main tip, a habit called monopodial growth. Narrow, V-shaped leaves angle out from the central stem. Lower leaves drop as new ones form above them. New aerial roots also emerge along the rising stem.

Short flower stems grow from the leaf axils in spring and summer. Each bears two to six thick, waxy flowers. The blooms are yellow-green, with a white lip marked dark red. Two horn-like tips give the lip its distinct shape. Flowers measure about 0.08–0.16 feet [0.025–0.05 metres] across. This orchid suits a warm greenhouse or conservatory. Its flowers and upright form provide its main display value.

Give it strong light, but shield it from direct midday sun. RHS rates it H1A, requiring glasshouse protection throughout the year. It suggests winter temperatures near 15°C and summer warmth up to 30°C. Use an open basket or a coarse, bark-based orchid mix. Keep roots moist with good drainage, rather than dry for long spells. Aim for 70–80% humidity, with good airflow and frequent misting during growth. Feed with orchid fertiliser from spring through autumn. Reduce misting if growth pauses during short, cool winter days.

Scale insects and mealybugs may attack the plant. Thrips can harm both buds and open blooms. Disease is uncommon, but poor airflow can lead to rot. Clean cutting tools help limit the spread of viruses. Remove spent flower stems at their base. Mature plants may form keiki, or side shoots, for propagation. Useful Tropical Plants records local use of root paste on wounds, boils and dislocations. This records a traditional use, not proof of medical benefit. The same source lists no known edible uses or hazards. That does not establish that the plant is safe to eat.