Zygopetalum

Zygopetalum is a small genus of terrestrial or epiphytic plants with 6 accepted species and is a member of the orchid family (Orchidaceae). They are native to Peru, Paraguay, Bolivia, Brazil and Northeast Argentina. The plants in this genus are popular because they are easy to grow, and the flowers are showy and fragrant. They can grow up to 2 feet tall and have slender-petalled flowers that grow on the tall spikes. The petals and sepals are green and spotted with purple or brown. The white lip is usually streaked with purple. The genus name, Zygopetalum, is derived from the Greek word, zygon, meaning "yoked" and petalon, meaning "petal." This literally means "yoked petal" and refers to the lip that yokes that other segments of the flower together.

These orchids require partial shade or bright, indirect light and moist, well-drained, bark-based orchid potting mix. The temperature needs to range from 70 to 80 degrees Fahrenheit during the day and  50 to 60 degrees at night in order for the plant to flower. Provide a consistent humidity level of 40 to 60%. Water the plant so that the potting mix is evenly moist, but not soggy. Wait until the potting mix is dry before re-watering. They require more water during their growing season, but less water in the cooler months. Use a diluted quarter strength balanced fertilizer weekly during its growing season. Repotting is recommended in the spring about very two years. The best method of propagation is division. Be sure to have at least three pseudobulbs per division.

These orchids have ovoid to conical pseudobulbs. Two to three shiny, strap-like, green leaves can grow up to 2 feet long. The flowers are borne on a tall spike that usually extends past the leaf length. The flowers are fragrant and long-lasting. They have unique pattern of stripes, spots, or specks with contrasting colors. The blooms appear on a raceme inflorescence and has a spray of 4 to 8 flowers in the spring and fall. Each flower measure 2 to 3 inches in diameter. 

Zygopetalum orchids can be used in the home, sunrooms, or office. They are very popular as ornamental indoor plant due to their striking appearance and fragrance.

Insects, Diseases, and Other Plant Problems:  Monitor for aphids, spider mites, mealybugs, and scale insects. Overwatering can cause root rot. Black leaf spot can result from the combination of poor air circulation, wet leaves, and cool temperatures. Good air circulation is required.