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Oncidium Orchid
Sprays of larger-than-normal yellowish-green flowers are covered in large mahogany blotches beginning in February and continuing into March. This selection from the native range has larger-than-typical flowers with a delicate fragrance. Grow this orchid in bright light, high humidity, and very well-drained soils (volcanic pebbles); fertilize it during the summer with a dilute foliar feed.
The orchid family consists of a large number of genera, each with its own unique characteristics. A common characteristic, however, is the basic form of the flower, which consists of three petals surrounded by three sepals���often in dramatic and contrasting colors and in a variety of shapes and sizes. Although some orchids are native to temperate zones, most orchids tend to prefer a semitropical or tropical environment (USDA Zones 9-11) and have epiphytic roots���meaning they derive moisture and nutrients from the air, and support from another plant; few orchids grow in soil. Orchids usually prefer a diurnal temperature fluctuation���meaning warmer days and cooler nights���though the absolute temperature range (cool, intermediate, or warm) varies by genus and is consistent with their natural habitat. While requiring adequate sunlight for a stunning bloom display, most orchids will not tolerate sustained direct sun.
Many varieties have pseudobulbs, a portion of the stem between leaf nodes that stores water to help sustain the plant through dry periods. Other varieties are monopodial, meaning upward growth is from a single growing point.
There is an exception to almost every general statement one can make about orchids. The family continues to challenge taxonomists.
Archived Copy: This content was captured before February 2022, and is no longer being updated.
