A yellow base is veined in pink on this moth orchid that seems to glow in the sunlight. Among the easiest orchids to grow indoors they are tolerant of low light, low humidity and indifferent care. For best results grow in bright light, high humidity, warm temperatures and water 2 to 3 times per week to keep the large fleshy roots moist. The potting media must be exceptionally free draining - the surface of most orchid roots need to dry slightly between watering.

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 semi-tropical 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.