What is the cause of umbrella leaves? What is the solution?

Large-leaf umbrella is a common plant in household potted plants. large-leaf umbrella can not only beautify the home environment, but also purify the air. We may encounter the situation of falling leaves when we breed big-leaf umbrellas, so, what is the reason for falling leaves? Is there any solution? Let's introduce it to you.

What is the reason for the falling leaves of a big leaf umbrella?

1. It's too cold. The curing temperature of Umbrella in winter should not be lower than 5 ℃, but should be kept above 15 ℃. Put umbrellas in sunny places as much as possible in winter. Do not put umbrellas near these equipment when there are heating equipment or air conditioners.

two。 I watered too often. In winter, the amount of water should be reduced and the amount of fertilizer should be controlled. Generally, it is better to pour water once every three or four days. Because it is dry in winter, you can spray less water on the leaves every day. 0.3% to 0.5% potassium dihydrogen phosphate and other phosphorus and potassium fertilizers can be sprayed at the end of autumn for foliar fertilization to promote the aging of branches and leaves and improve cold resistance in winter.

3. Diseases and insect pests. Greenhouse and indoor high temperature, humidity, poor ventilation and other conditions may occur anthrax or shell insects, red spiders and other diseases and insect pests. Especially when the leaves curl and fall, and there are white spots on the leaves, they should be examined more carefully.

What is the solution to the falling leaves of a big-leaf umbrella?

Prevention needs to give better light conditions, fertilization should be thin, fertilizer should be applied frequently, and one-time sufficient or excessive application should be avoided. Keep the temperature above 10 ℃ and avoid the cold wind. Even if a short cold wind blows, and then placed in a suitable temperature environment, the black leaves will fall off. In this case, the number of watering needs to be reduced.

The safe overwintering temperature of the umbrella is 8 ℃, and direct sunlight is avoided in summer, and the suitable shading is 30-40%. When exposed to the hot sun, the leaves will lose luster and burn withered yellow; when it is overcast, it will cause fallen leaves. Due to the large growth, fertilizer is applied once a month, and sufficient water is supplied to ensure that the basin soil is moist, too dry and too wet will cause leaves to fall off. Foliar spray should be carried out frequently during the growth period, and the air-dried leaves will fade and yellowing.

The editor reminded that the big leaf umbrella is a kind of plant that is afraid of the cold, so the indoor temperature must be adjusted well, the warm work must be done well in winter, and when fertilizing, it must be in the right amount, not too much, otherwise it will cause bad harm to the big leaf umbrella.