Causes of yellowing of leaves of orchids and their solutions

Orchids, also known as Chinese orchids, terrestrial orchids and orchids, are perennial herbaceous flowers of the genus Orchidaceae. Originated in China, which is widely distributed in Yunnan, Guizhou, Sichuan and Tibet, it is not only a traditional precious flower in China, but also a famous flower in the world.

People have always regarded orchids as a symbol of nobility and elegance, and together with plum, orchid, bamboo and chrysanthemum, they are called "four gentlemen". Orchid with delicate fragrance and chrysanthemum, daffodils, calamus also known as "flowers and plants four elegant", and orchid ranks first. The orchid is simple and unadorned, the leaf color is evergreen, the leaf quality is soft and firm, the flower fragrance is Qingyuan, it has extremely high ornamental value, it is the treasure of display living room, living room or adornment study, foyer.

Improper watering causes yellow orchid leaves.

Leaf yellow cause

Orchids like the moist growing environment and have high requirements for air humidity. Underwatering can cause root damage or when the air is too dry, it can cause orchid leaves to turn yellow. On the contrary, if too much watering, stagnant water in the basin and poor drainage, the roots of orchids will rot without oxygen, yellow leaves will appear, and even die.

Solution.

Watering should master skills, watering should be carried out according to the drying condition of the basin soil, and the right amount should be watered at the right time. Avoid basin soil being too dry or too wet. Pay attention to the air humidity of the orchid growing environment. If the air is too dry, spray water frequently to maintain humidity.

Yellow orchid leaves caused by improper fertilization

Leaf yellow cause

If the orchid leaves are yellow caused by fertilization, it is generally due to excessive fertilization at one time, resulting in orchid rhizome burns and leaves yellow. Because the growth of orchids does not need big fertilizer, fertilizer should be applied thinly.

Solution.

In terms of fertilization, orchids need to apply thin fertilizer skillfully, and do not apply thick fertilizer, large fertilizer and unrotten liquid fertilizer. On the second day after fertilization, clear water should be irrigated once to dilute the fertilizer and avoid fertilizer damage.

Yellow leaves of orchids caused by light

Leaf yellow cause

Orchids have more strict requirements for light, it likes a more shady growth environment, more afraid of the sun, but can not lack of sunshine. Therefore, the growth of orchids will be affected by insufficient or too strong light. Strong light, prone to sunburn, so that the leaves of orchids injured and yellowed; weak light, orchids plant nutrients are not enough, easy leaves yellowing.

Solution.

Orchids like semi-shade, in addition to full sunshine maintenance in early spring and winter, put the plants in a well-ventilated place at other times to avoid direct sunlight.

Yellow leaves of orchids caused by diseases and insect pests

Leaf yellow cause

If orchids encounter diseases and insect pests, there will also be yellowing of leaves, such as leaf spot, anthrax and so on. Rotten roots will also lead to yellowing of leaves, or even more harmful.

Solution.

In general, orchids have diseases and insect pests, affecting the leaves will be a gradual process. In the early stage of the onset of diseases and insect pests, if they can be found in time, measures can be taken. According to the symptoms of orchids, to judge what kind of diseases and insect pests orchids encountered, and choose the corresponding treatment measures, spraying pesticides or artificial control, will alleviate the yellowing of orchid leaves.

Yellow orchid leaves caused by metabolism

Leaf yellow cause

The growth of orchids needs to be replaced by the new and old with the growth of the plant. Because of the need to develop new leaves, the old leaves will not continue to grow, but will turn yellow and wither and fall off.

Solution.

Because the leaf yellowing caused by metabolism is a normal phenomenon, there is no need to worry too much.