Why Your Oncidium Orchids Aren't Blooming

Getting Oncidiums to Flower Again

You’ve grown two oncidiums ('Red Fantasy' and 'Sweet Sugar') for two years. They bloomed when purchased but haven’t flowered since, despite appearing healthy with adequate light and moisture.

Most Common Reason: Insufficient Light

Oncidiums need bright light to initiate blooms. Check leaf color:

• Dark green – not enough light.
• Medium to light green – ideal.

How to Increase Light

• Move plants to a brighter window (east or south with sheer curtain).
• If temperatures stay above 50°F, place them outdoors under 50% shade cloth during warmer months.
• Supplement with grow lights if natural light is limited.

Once light levels are corrected, expect flower spikes within a few growth cycles. Maintain consistent watering and fertilizing while you wait.