Wenxinlan likes a dry environment. Before planting, a layer of broken tiles and bricks should be laid on the bottom of the flowerpot. The soil with good drainage and air permeability is the best choice. You can choose 4 parts of broken fern root, 1 part of peat soil, 2 parts of broken charcoal, 2 parts of vermiculite and 1 part of water moss to mix.
Oncidium likes semi shade environment, which can be maintained in full sunlight in winter. It does not need shade and can promote flowering. In other seasons, shading should be done to avoid burning leaves.
Different varieties of Oncidium have different requirements on temperature. The temperature of thick leaf varieties should not be lower than 12 ℃, and the most suitable growth temperature is 18-25 ℃; the most suitable growth temperature of thin leaf varieties is 10-22 ℃, and the lowest temperature should not be lower than 8 ℃.
Oncidium like a dry environment, when the surface of the soil and I dry can be watered. In the growing season, the amount of water can be increased appropriately, and it can be watered once in the morning and once in the evening to ensure no water accumulation. In winter, reduce the amount and frequency of watering, water control is conducive to flowering. When the temperature is lower than 10 ℃, stop watering to avoid frostbite.
In spring and autumn, organic fertilizer should be applied every 20 days. All elements should be balanced. It is OK to irrigate roots or spray leaves. Do not apply fertilizer when the temperature is too low in winter.
Changing pots for oncidium is usually after flowering. The seedlings of Oncidium should be selected before the growth period, such as when the weather is cool after early spring and autumn. When changing pots, according to the growth of plants, change large pots or change part of the soil.
In summer, the main attention should be paid to shade, and the temperature should be lowered in time when the temperature is high. In midsummer, water once a day, thoroughly, that is, water flows out from the bottom of the flowerpot. Usually, water when the soil is half dry.
