The Cymbidium, or Boat Orchid, is one of the most widely grown and popular orchids in temperate Australia, famed for its resilience and its spectacular, long-lasting floral displays. These terrestrial orchids form large clumps of long, graceful, grassy leaves and produce tall, elegant spikes of large, waxy flowers. The blooms come in an amazing array of colours, including classic white, pink, green, yellow, brown, and red, often with intricate contrasting patterns on the lip. They are particularly valued because they typically bloom during autumn and winter, bringing much-needed colour to the colder months.
Caring for Your Cymbidium Orchid
- Growing Conditions: Unlike many tropical orchids, Cymbidiums prefer a well-lit spot outdoors in a temperate climate. They love bright light but need protection from harsh, direct summer sun, which can scorch the leaves (a shade cloth or a spot under an eave is often ideal).
- Chilling Requirement: To flower reliably, Cymbidiums need a distinct difference between day and night temperatures, particularly in late summer and autumn. A drop in temperature (chilling) helps initiate the flower spike.
- Potting Mix: They are usually grown in a specialised, chunky orchid potting mix that allows for excellent drainage and air flow. Repotting is typically only necessary every few years when the plant has completely filled its container.
- Watering: Water thoroughly when the potting mix is dry to the touch, and water frequently during the warm, actively growing months (spring and summer). Reduce watering significantly during winter.
- Feeding: Cymbidiums are heavy feeders during their growth phase. Use a balanced liquid fertiliser regularly from spring to mid-autumn. Switch to a fertiliser higher in phosphorus and potassium in late summer to encourage bud development.
Usage in the Garden
Cymbidiums are excellent feature plants for patios, balconies, and courtyards. Because they require a period of bright light and cool nights to flower, they are best grown outdoors in pots. Once the spectacular flower spikes open, you can bring the pot indoors for a few weeks to enjoy the blooms, but they should be returned outdoors after the flowering period is complete.
