Oncidium Heatonensis gx

A small to medium-sized, epiphytic orchid with upright, 10-20cm long, leathery, evergreen leaves. New growth appears from the base of the swollen stem - pseudobulb, which is a storage organ for water and nutrients. They are oval shaped, glossy green when mature. The plant usually flowers in autumn or spring, on arching flowering stems. New flowering stems arise from the axils of leafed sheath wrapped around young, mature pseudobulbs. Star-shaped, white or pale pink flowers are covered with darker pink pattern.

Grow in an open bark-based orchid compost with addition of perlite, sphagnum moss or coir. Provide enough bright filtered light, but keep away from direct sunlight or a heating source. Ideal temperatures are around minimum 8°C at night and up to maximum 25 °C during day. Water regularly, when the pot feels light when lifted. Ensure that all water drains away, preventing the plant sitting wet. Orchid fertiliser can be applied regularly throughout the growing season. Reduce watering and feeding in winter months. For more notes on cultivation, see oncidium orchid (cool) cultivation

No pruning required. Cut off spent flower spikes.

Propagation by seed is only possible in a controlled laboratory environment. Mature plants may be divided when the plant overgrows its container. Each division should have at least 3 older pseudobulbs with a sufficient amount of stored energy and water, to support new growth and reduce stress after repotting.

May be susceptible to mealybugs, aphids and scale insects.

Generally disease-free. Poor air movement may cause bacterial or fungal rots. Good hygiene practice and sterilising cutting tools prevent the spread of virus diseases.

Oncidium Heatonensis gx

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