When Are Orchids in Bloom?

Phalaenopsis Species

• Phalaenopsis types of orchids, commonly called "moth" orchids, are the species most often recommended for novice orchid growers. Their long sprays of blossoms can individually last for up to six weeks, and the plant can last in continuous bloom for several months starting in winter or early spring. Moth orchids do best in an eastern exposure in homes that maintain a temperature between 65 and 75 degrees F. These types do have a high need for regular watering.

Cattleya Species

• Cattleya species of orchids are most often used for bouquets and corsages due to their larger blossoms. Blossom size can be as large as 3 to 7 inches in diameter. Cattleya orchids bloom only once per year either in the spring or the fall. They bloom for between two and six weeks. These orchids need a full day of sunlight to blossom properly. A southern location is best with temperatures ranging form 60 to 70 degrees F.

Dendrobium Species

• Dendrobium orchids grow in similar conditions to Cattleya orchids and produce a variety of blossom colors including white and lavender. These orchids bloom in the fall or winter for a period of three to four weeks. Dendrobium orchids bloom on long sprays similar to the Phalaenopsis species of orchids. Temperatures ranging from 50 to 65 degrees F are ideal for Dendrobium orchids. Avoiding the midday sun will help to prevent scorch.

Proper Orchid Culture

• The best way to ensure blooms on your orchids, regardless of species, is to make sure they have the appropriate media, light, water and nutritional requirements. Orchid media needs to be very porous. Pot your orchid in a bark mix or pumice stone type of potting mix specifically produced for orchid culture. Make sure that your orchid receives between one half to a full day of bright but indirect light, depending on variety. Do not overwater your orchids. Don't let your orchid dry out when in bloom, but cut back on watering when not in bloom. Give your orchid a houseplant fertilizer when in bloom to help prolong the blooming period.