The oncidium orchids develop, in the wild, in places where the summer temperatures are not too high, therefore, in order to obtain a good development of these plants it is advisable to keep them in a very humid and well shaded place all year round; In winter the ideal temperature for the oncidium tigrinum is around 12-15 °C.
The optimal growing medium for these orchids consists of a mixture of two parts osmund fiber and one part finely chopped sphagnum peat, with the addition of river sand. It should be carefully checked that the substrate chosen does not allow water to stagnate, as this type of orchid does not stand it and can be quickly damaged. It is essential, however, to maintain the right degree of humidity, proceeding to vaporize the leaves with water at room temperature when temperatures are higher.
It is also important to place these plants in environments with good air circulation, without, however, subjecting them to cold air currents, which are harmful to their growth.
- To the genus Oncidium belong hundreds of species of orchids originating from the Caribbean islands and Central and South America, in fact once there were almost seven hundred species of onc…
- There are many types of orchids, characterized by colors mostly soft but bright, various sizes adaptable to each room and the total absence of perfume that makes them perfect for any situation.
- Some species of orchids have very special flowers, with a curved labellum, closed to form a kind of shoe; orchids with cup-shaped lips belong to three main genus of orchids.
- The genus cattleya orchids counts about fifty species of epiphytes and lithophytes, native to South America; they are equipped with fleshy pseudobulbs, which may have dimensions close to the 5-7 cm, with a …
The oncidium tigrinum orchids divide when the new shoots appear, and repot every 2-3 years, to eliminate the old substrate that over time is degrading and no longer provides the necessary support for the roots of these epiphytic plants. When repotting, it is essential to pay close attention to the roots, which are rather delicate and fragile; to avoid breaking them, it is advisable to wet them before repotting and dividing them to obtain new plants.
Multiplication and repotting operations should be carried out in the period between the end of summer and the beginning of autumn. These plants, being epiphytes, can also live without being placed in a pot, but resting them on trunks or barks, but it is essential to vaporize regularly the roots.
It is advisable to take precautions against the red spider, which causes the formation of discoloured spots on the leaves. To eliminate the problem it may be sufficient to proceed with more vaporization of water on the leaves, as these parasites do not like the excess of moisture. There are also special insecticide products that allow you to quickly eliminate the problem.
Other problems may arise from unfavourable environmental conditions, such as incorrect temperature or exposure to direct sunlight during the hottest days.
O.Varicosum is a particular variety of this type of orchid that is widespread in Brazil; it has flattened pseudobulbs, with 2 lance-shaped leaves, flowers gathered in panicles, yellow-green, with brown stripes, the labellum is golden yellow, with a dark spot on the crest.
These plants need dry and temperate climates during the winter season and a warm and humid environment during the spring and summer to grow at their best.
Orchids Oncidium – Oncidium tigrinum: O.Altissimus
This variety comes from the West Indies, has flattened pseudobulbs, with one leaf only, and yellow flowers with brown spots. They are a rather resistant variety, which adapts to live in climatic conditions that can show remarkable temperature changes.