Oncidium maculatum 'San Bar Giant'

42.14706421, -87.78977203

42.14709091, -87.78972626

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.

Soil:
Moist
Plant Shape:
Upright
Exposure:
Full Sun
Partial Shade
Bloom Time:
January - February
March - April
Bloom Color:
Red
Yellow
Landscape Use:
Bedding or Border
Wildlife Interest:
Attracts Butterflies
Plant Type:
EPIP
Hardiness Zone:
10 - 11