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The Honolulu Advertiser
Posted on: Saturday, March 21, 2009

HAWAI'I'S GARDENS
Popular 'moth' orchid in bloom

By Scot Mitamura

Hawaii news photo - The Honolulu Advertiser

Phalaenopsis, or moth orchid.

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ORCHID EVENTS

55th Annual Kunia Orchid Show

Leilehua High School cafeteria

1515 California Ave., Wahiawa

9 a.m. to 5 p.m. today

9 a.m. to 4 p.m. tomorrow

"Symphony of Orchids"

29th annual Windward Orchid Society Orchid Show and Plant Sale

King Intermediate School

46-155 Kamehameha Highway, Kane'ohe

9 a.m. to 7 p.m. Friday and Saturday

9 a.m. to 4 p.m. March 29

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One of the most popular orchids for spring is the phalaenopsis. Because its general shape resembles a large species of moth (Phalaena), it is commonly referred to as the moth orchid.

About 66 species of phalaenopsis come from Southeast Asia. Thousands of man-made hybrids are available in the marketplace, and they have become one of the most popular potted flowering plants. Most start blooming in the late winter and last throughout spring, often for two to six months. They come in a multitude of colors, and even have striped and spotted varieties.

Growing phalaenopsis is easy. They like low temperatures of about 60 to 65 degrees and highs of 70 to 80. These orchids like to grow in shady areas and require light intensities of 1,000 to 1,500 foot-candles. If you don't have a shady area outside, you can keep them indoors, making them great houseplants. Place them in an east- or west-facing window and shade them from the direct sun with a sheer curtain, and they will do just fine.

They can be grown in orchid bark or sphagnum moss, and like to be kept evenly moist. Repotting should be done in the early summer to early fall, once every two years or less. Feed with any balanced fertilizer.

The best way to grow phalaenopsis is to tilt or hang them. Since in nature they grow on other plants as an epiphyte, their leaves are always tilted or hanging. This keeps water from accumulating in the crown of the plant, avoiding crown rot.

Overall, phalaenopsis are extremely rewarding to grow, and the new varieties being created make them more popular every year. They are in peak blooming season now, so you will be able to see an abundance of them at the spring orchid shows.