Vivi's Orchid Corner

April 2005 - Volume 10, Issue 4

Phalaenopsis

Dear Orchid Friends:

Phalaenopsis are generally the first orchids of many. These orchids are splendid, long lasting and visually stunning. Who can resist their beauty? Phalaenopsis are commonly known as "Moth Orchids", floating daintily on their flower spikes.

There are literally thousands of varieties (species and hybrids included). Growers continue to excite us each year with new assortments. Qualities of the best are crossed, resulting in exquisite flowers. This month's article focuses on general care of Phalaenopsis, primarily those with the long arching inflorescences we know so well, and a beautiful assortment of photos.

Phalaenopsis are easy to grow and cultivate. These orchids are classified as monopodial: the plant produces new leaves at the top of the existing plant. Phals have large, leafy somewhat fleshy leaves and make attractive plants with without the flowers. Cattleyas, on the other hand, are spread by developing new pseudobulbs.

LIGHT: Phalaenopsis like bright, indirect light and do well in the home. These orchids are generally warm tolerant and thrive in warm to intermediate temperature ranges (70-85°F), and do tolerate cool nights (60°F). Buds are sensitive to temperature extremes and fluctuating temperatures. Such temperature variations make them more prone to bud drop.

HUMIDITY: The right amount of humidity is an important aspect of Phalaenopsis care. A general rule of thumb is 50-80% humidity. If growing these orchids in your home, be mindful of dry heated air and mist frequently or use water filled gravel trays to provide extra moisture. Air movement is critical to prevent diseases and root rot.

WATER: Phalaenopsis prefer to be moist. Ensure your orchids are watered well at least weekly. The root systems provide the much needed hydration for the plant, thus it is important not to have the roots become too dry or desiccated. Keep your plants evenly moist. Please note some caution…. individuals tend to over water so monitor how heavy handed you are with your watering schedule. Here in South Florida, I do let my orchids dry out slightly between watering. Florida is a moist and humid environment and phals are prone to root rot. I have had good luck with my watering regime, but I never let them become too dry.

POTTING MEDIUM: Phalaenopsis are quite adaptable and grow easily in various mediums such as sphagnum moss, or a mixture of bark, rock. Whatever medium you use, make certain the medium drains well.

FLOWERS: There are a myriad of colors and styles to delight us all. Flowers are long lasting and are a favorite of florists. Flower spikes (inflorescences) grow tall with many flowers on each stem. This arrangement is what endears these orchids to us. These orchids generally bloom during winter to spring, although some varieties do flower at other periods.

Spring is the ideal time to showcase Phalaenopsis, as evidenced by the gorgeous array of flowers in the photos. Happy Spring and enjoy!

Until next time,

Vivi