Are you looking for ritzy gifts with Mother’s Day? Then consider orchids.
According to Jan Rae, vice president of the Kona Orchid Society, the organization’s annual Orchid Show and Sale is slated for 9 a.m. Friday and Saturday, May 12-13, at the Old Kona Airport Park pavilion, just in time to shop for Mother’s Day gifts
For more information about the sale and program, call Jan at 345-1447 or president Linda Baseman at 329-1913. For folks in East Hawaii, it is a great opportunity to take a weekend drive to get some sun after last week’s rains.
To most people, the word “orchid” immediately brings to mind the purple flowered Cattleya. This orchid has been and still is the most popular. The genus Cattleya contains only 50 species in the orchid family containing more than 15,000 known species. More are being discovered each year. Most grow as epiphytes in trees, but some grow in soil and even on rocks.
Many orchids are coming in to bloom now that the rains returned, especially in mauka rain forests. Wild Chinese ground orchids are in full glory under towering hapuu and ohia forests.
There are many orchid species and hybrids that are easy to grow in Hawaii. Orchids are well adapted here and many species need almost no care. In fact, several orchids have naturalized and can be found growing in abundance. These include the bamboo orchids, or Arundina, from the East Indies. This orchid is common in open, grassy areas of East Hawaii. The Phaius, or Chinese ground orchid, is found in moist forested areas along with the Spathoglotis, or Malayan ground orchid. The Spathoglotis comes in many colors from purple to yellow and orange. These can be found at many local nurseries.
Epidendrum radicans, along with the new epi-cats (Epidendrum and Cattleya), with their attractive pastel shades, are becoming quite popular as houseplants and outdoor plantings. Epidendrum produces thin, reed-like foliage with many aerial roots. Tip cuttings with a few serial roots can be potted to increase the numbers of this plant. Flowers are 1 inch or less in size but are produced in great numbers. They are very effective for arrangements as well as for corsages.
Oncidium is among the most valuable of the spray orchids. They are commonly referred to as dancing girls or popcorn orchids because of their shape. Flowers come in yellow and brown, white and brown and other similar color combinations. They can attain sizes of 1/2 to 3 inches across. Many flowers can be produced on a single flower spike.
Strap leafed Vanda has become very popular with growers and hobbyists. The wide range of colors, from blues to browns to whites, has attributed greatly to its popularity. Vanda flowers are long lasting and excellent for corsages. Each flower spike will produce many flowers, several inches or more in diameter. Plants are excellent for hanging baskets containing only charcoal, but will need fertilizer applications.
The terete Vanda, or “Miss Joaquim,” was for years the major orchid produced in Hawaii for lei. Now, Dendrobium is becoming more popular.
There are more than 700 species of Dendrobium including the honohono, which resembles the wandering Jew in the shape and arrangement of its leaves. The more common ones grow with ease.
For the more advanced gardener, try the butterfly orchid, or Phalaenopsis. It is desirable for corsage use. Flower spikes will contain from a few to many flowers. Lavender or white flowers are most common. Flowers will average about 2 inches across and will remain open for several weeks.
For high elevation gardeners, try Cymbidium. Cymbidium is an exciting genus with hybrids flowering in a wide range of colors including pink, red, yellow, green, maroon, bronze and white, in bold vibrant tones as well as more delicate pastels and art shades. Their tall, erect, arching or hanging sprays, durability and longevity, ease of cultivation and usefulness as a potted plant, landscape plant or commercial-cut flower led to tremendous worldwide popularity. Conventional varieties require cool evening temperatures of about 55 degrees during the late fall and winter months for good flowering. Such conditions occur naturally in Volcano, Waimea and upper Kona and Kula on Maui, Kalae on Molokai, Pupukea on Oahu, Waimea on Kauai and other scattered areas, mostly above 1,500 feet elevation, throughout the state.
The species and hybrids of miniature Cymbidium require basically the same growing conditions as the larger conventional types. A major cultural difference is that most of the miniatures do not require temperatures nearly so cool as their larger relatives. The preferred temperature range for minis is 70 to 80 degrees during the day followed by a 10-degree drop at night, a condition much easier to achieve in Hawaii’s lowland areas than that required by the conventional types.
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To grow most orchid species, here are some hints:
Most orchids require partial shade for best growth. A good rule to follow is to give the plants all the light they can stand without scorching. Excessive shade will result in lush, dark green foliage and few flowers. Too much light can produce scorched spots on the foliage. This means shade is needed immediately. Saran, lath or trees can be used for overhead shade.
Many Cattleya, Epidendrum, Oncidium and Vanda species will tolerate temperatures down to 45 degrees if in a sheltered location. But most orchids prefer minimum night temperatures of 55-60 degrees. In Hawaii, there really is no maximum temperature for orchids if the humidity and ventilation are increased in proportion to the rise in temperature. In general, temperatures comfortable for people also are agreeable for orchid plants.
Watering orchids must be adjusted to the need of each plant and the media in which it is grown. Many orchids can be grown in coarse cinder or even gravel. A large plant will require more water than a small one; orchids in large pots will dry out slowly compared to plants in small pots. Orchids in active growth will require more water than those in a semi-dormant state. This means plants will require more frequent watering during the warm summer months than during the cool winter season. Overwatering has been the main cause of death of orchid plants. Roots will rot, and the medium becomes soggy and soft which is harmful to the plant. Remember, never water a wet plant under any circumstances.
Fertilization can be a controversial subject. Plants growing in cinder or rock can be fertilized with a complete liquid fertilizer of a 1-1-1 ratio. Follow the directions on the label. You can apply this mixture every three to four weeks during the year in place of a normal water application.
You can minimize orchid care by attaching orchids to a tree such as plumeria or calabash. That way you can have dozens of blooming orchids even in a small garden. Other epiphytes such as staghorn ferns, bromeliads and some Vireya rhododendrons can be incorporated to create air gardens.
Many more rare and interesting species will be available at next weekend’s Mother’s Day plant sale along with expert orchid enthusiasts to answer your gardening questions.
