Odontoglossum wyattianum is found in Peru. It is only known in deep shade on solitary trees from the seasonally wet cloud forests of central Peru, at altitudes of 1700-2500 meters.
Odontoglossum wyattianum also called as Wyatt's Odontoglossum, Oncidium wyattianum, is a species of the genus Odontoglossum. This species was described by Gurney Wilson in 1928. It was named in honor of Rev. Paul Wyatt, of Bedford, England, to whom the plant had been forwarded by a friend in Peru, which is assumed to be the plant’s origin.
IDENTIFY ODONTOGLOSSUM WYATTIANUM ORCHID PLANT
Odontoglossum wyattianum is found in Peru. It is only known in deep shade on solitary trees from the seasonally wet cloud forests of central Peru, at altitudes of 1700-2500 meters.
It is a caespitose, medium sized, warm to cool growing, epiphytic species with elliptic-ovoid, compressed, sulcate with time pseudobulbs that are subtended by leaf bearing sheaths and carrying 2, apical, oblong-elliptic, petiolate, subacute, 44 x 2.5-4.0 cm leaves.
Wyatt's Odontoglossum blooms in the late winter and spring on an axillary, erect, 40 cm long, pedunculate, 5 to 10 flowered, racemose inflorescence with lanceolate, acuminate floral bracts that are shorter than the ovary arising on a mature pseudobulb with 8 flowers held well above the leaves. The flowers are campanulate, showy and fragrant; dorsal sepal light to dark brown with a white transverse bar or markings near the base, and a yellow apex; lateral sepals and petals similar; lip white to pale purplish heavily marked with purple near base.
This species differs from the closely related and morphologically similar Odontoglossum deburghgraeveanum, Odontoglossum harryanum and Odontoglossum helgae in that Odontoglossum wyattianum has a more distinctly curved column carrying much larger, triangular, serrate wings, and frequently with a serrate column hood, versus straighter columns with insignificant and acute winglets for the other species.
ODONTOGLOSSUM WYATTIANUM ORCHID PLANT CARE AND CULTURE
Cultural information should only be used as a guide, and should be to be adapted to suit you. Your physical location; where you grow your plants, how much time you have to devote to their care, and many other factors, will need to be taken into account. Only then can you decide on the cultural methods that best suit you and your plants.
Light:
Odontoglossum wyattianum need a light level of 10000-15000 lux for mature plants, but less for young plants and when temperatures are high (70% shade cloth over summer and more light in winter). Leaves turn reddish blue if receiving too much light and leaf loss will occur if too sun damaged. Dark green leaves indicate insufficient light. A slight bronzing of the leaves and older bulbs indicates the light is good for flowering.
Temperature:
Wyatt's Odontoglossum should be grown under temperature conditions. In summer, the optimum temperature range is between 8°C and 26°C. In winter, it need cool temperature: a minimum nighttime temperature of 7 to 12°C, with daytime temperatures of 10 to 17°C. The diurnal difference between day and night is usually 8 - 10°C. In their natural environment night temperatures can fall to 5°C and although tolerant of low temperatures down to 0°C, they will not tolerate frosts.
Humidity:
This orchid prefer humidity levels between 55-75%; higher levels of 60-80% require good air movement especially in the cooler months. Plants can also tolerate humidity levels down to 40% which can be maintained or increased with morning and evening misting.
Substrate, growing media and repotting:
Odontoglossum wyattianum are usually grown in pot using small bark (5-10mm) perlite potting mix (5:1) or in sphagnum moss and perlite (70:30) as substrate. Some growers place a layer of sphagnum moss on the top of the pot to reduce evaporation and keep the roots cool. They can also be grown in perlite with a layer of gravel on the top.
These plants should be repotted every year to every 2 years in spring or autumn when new growths are about half mature. They should be grown in small squat pots that allow more frequent watering. The base of the new growth should be planted about 1.5cm into the bark but no deeper. Keep bark barely moist until new roots appear then resume normal watering.
Watering:
Wyatt's Odontoglossum like abundant water and require frequent watering in warmer months. They must never be allowed to dry out. During summer irrigation will be required every 2 -3 days, however during winter rates may drop to once every 10 – 14 days. Misting daily in very hot weather is recommended. To reduce leaf spotting, avoid watering in the heat of the day or late afternoon in warmer months. Also avoid wetting the leaves and water the pot, not the leaves.
Fertilizer:
This plant require frequent application of half to quarter strength fertilizer all year round but less in winter. Apply fertilizer every 2 weeks when growing actively but monthly when less active. They are not gross feeders and too much fertilizer will harm their roots and turn leaf tips brown. Use of high phosphorus or potassium fertilizers as plants approach flowering can increase flower count and substance.
Rest period:
Odontoglossum wyattianum do not a rest period to stimulate flowering nor in winter. But they need less water in the winter, especially if they grow under the conditions of a dark, short day that occurs in moderate latitudes. You can let the plants dry between the next watering, but you must not let the plants stay dry for a long time. Fertilization should be limited or should be completely abandoned until spring, when stronger watering resumes.
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