The Slanting Oncidium is native to Mexico. There are reports of occurrence also in Guatemala and El Salvador, but Hágsater (1981) reports that the occurrence of Oncidium oblongatum Lindley south of the Isthmus Tehuantepec is doubtful and believes that the plants of Guatemala and El Salvador are probably Oncidium fasciculatim Hágsater. In Mexico, Oncidium oblongatum meets in the Sierra Madre del Sur mountain range in the states of Guerrero and Oaxaca, at heights of 1800-2400 m. They grow there in mixed pine-oak forests, usually as epiphytes, in oaks.
Oncidium oblongatum orchid, also called as The Slanting Oncidium is a species of the genus. This species was first described by John Lindley in 1844. Several synonyms are know for this species such as: Oncidium brevifolium; Oncidium pelicanum; Oncidium xanthochlorum.
IDENTIFY ONCIDIUM OBLONGATUM ORCHID
The Slanting Oncidium is native to Mexico. There are reports of occurrence also in Guatemala and El Salvador, but Hágsater (1981) reports that the occurrence of Oncidium oblongatum Lindley south of the Isthmus Tehuantepec is doubtful and believes that the plants of Guatemala and El Salvador are probably Oncidium fasciculatim Hágsater. In Mexico, Oncidium oblongatum meets in the Sierra Madre del Sur mountain range in the states of Guerrero and Oaxaca, at heights of 1800-2400 m. They grow there in mixed pine-oak forests, usually as epiphytes, in oaks.
This plant is an uncommon, medium sized, warm to cool growing, compact, which can reaching he height of 16-47 cm, with ovoid to ovoid-ellipsoid, compressed dark-green pseudobulbs (4-10 cm long and 1.7-5.0 cm wide) partially enveloped basally by 2 to 4, imbricate, leaf-bearing sheaths and carrying 2, apical, oblong-ligulate to linear-lanceolate, subcoriaceous, suberect, narrowed basally, acute to obtuse leaves. The leaves are 12-37 cm long and 1.7-4.2 cm wide and the inflorescence can reach 130 cm.
It blooms with an axillary, erect, 4'8" (1.4 meter) long, short branched, many flowered panicle with showy, fragrant flowers at almost all year except for March and April with a maximum in September and October. The yellow flowers are strongly marked on the dark brown on the lower half to two-thirds of the petals of both whorls. The yellow lip has a brown spot at the base of the isthmus and two small, brown spots on the sides of the thickening. The bulge is white with brown spots and the prone is yellow.
GROW AND CARE ONCIDIUM OBLONGATUM ORCHID
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:
Oncidium oblongatum orchid need light of 25,000-50,000 lux. The light should be slightly filtered or scattered, and the plants can not be exposed to the direct sunlight of the midday sun. Strong air movement should be ensured all the time.
Temperature:
The average temperature of the summer day is 24-25 ° C, night 12 ° C, and the daily difference is 12-13 ° C. In spring, before the beginning of the rainy season, the average day temperature reaches 26-28 ° C, night 9-12, and the daily difference is 16-17 ° C. The average temperature of the winter day is 22-24 ° C, the night 5-7 ° C, and the daily difference is 16-17 ° C.
Humidity:
In the summer and early autumn, the average humidity is 70-75%, after which it slowly falls to 55-60% in winter and spring. At higher altitudes, these averages may be slightly higher.
Substrate and growing medium:
These plants can be grown in containers with perfect drainage or mounted on tree-fern rootstocks or cork. Due to the long, curved floral shoot, however, it is easier to handle the plant when it is mounted or planted in a hanging pot or basket.
They are often grown in pots or baskets with a very loose, well-permeable substrate, such as, for example, medium-sized bark. The addition of pearlite loosens the substrate, and at the same time allows the retention of a certain amount of moisture. The addition of charcoal also relaxes the substrate and also prevents it from souring.
Watering:
Cultivated plants should often be watered during active growth, but their roots must dry quickly after watering, and the ground around the roots can never be stale or soggy. In summer, apply cycles 2-3 days of drying between watering. When new growths reach maturity in autumn, the amount of water should be gradually reduced. If the leaves or pseudobulbs get too wrinkled, you can increase the amount of water a bit.
Fertilizer:
In the period of active growth, it is recommended to feed the plant weekly 1/4-1/2 fertilizer doses for orchids. You can use a balanced fertilizer, and you can apply fertilizer with a high nitrogen content from spring to mid-summer, and then fertilize with high phosphorus content until the end of autumn. Fertilization should be eliminated until new growths appear in spring.
Repotting:
Plants should be repotted when the substrate begins to decompose, or when the plant grows out of the pot. Repotting is best done when new roots start growing, because then the plants are able to stabilize as quickly as possible.
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