[what if the leaves of a crown turn yellow] how to raise a crown?

A crown, also known as radish and begonia, rabbit ear flower, like a cool, moist and sunny environment. It is suitable for planting indoors, and a greenhouse is needed in winter. There are many reasons for the yellowing of the leaves. How can we learn the breeding method of the crown? What if the leaves of a crown turn yellow?

What if the leaves of a crown turn yellow?

There are many reasons why the leaves of a crown turn yellow, and different solutions can be used according to different reasons.

First, if the leaf of a crown turns yellow due to high temperature, it can be solved by appropriately reducing the ambient temperature.

Second, if the problem of yellow leaves is caused by improper watering, it can be solved by changing watering.

Third, if the yellow leaves caused by red spiders and whitefly should be sprayed as soon as possible. Can choose acarine, aphid lice net and so on.

Fourth, if it is caused by leaf spot disease and other diseases of yellow leaves, should be sprayed with fungicides to control, can choose carbendazim, zinc, agricultural streptomycin and so on.

How to maintain a crown?

1. Lighting: Yipinguan likes sunshine, so you should put it in a sunny place for maintenance. Adequate light is very beneficial to their fertility, but they are afraid of direct exposure to strong light in summer.

two。 Fertilization: Yipingguan is a fertilizer-loving plant, which is topdressing 2 ‰ potassium dihydrogen phosphate once a year in spring and autumn. Nitrogen fertilizer should not be applied during flowering, otherwise it will cause branches and leaves to grow and shorten the life of flowers.

3. Temperature: a crown is not resistant to high temperature. Too high temperature will put it into a dormant state. Plants above 30 ℃ will stop growing and go into dormancy, while plants above 35 ℃ will easily rot and die. In winter, the flowering temperature should not be lower than 10 ℃. If the temperature is too low, the flower color will be dim and easy to wither, and the suitable temperature for growth is 15 Mel 20 ℃.

4. Watering: Yipingguan likes to be wet and afraid of waterlogging plants, watering should not be too much, too much watering will cause rotten roots and death. Just keep the soil moist every day.

5. Diseases and insect pests: the diseases of a crown are more than insect pests, and the main diseases, gray mold and soft rot, are mostly caused by bacterial infection, and the disease parts show softening and rot, which can be prevented by methyl topiramate or chlorothalonil.

A crown leaf yellowing may be due to fertilization or application concentration is too large, or the frequency is too frequent, generally fertilizing once every 15 days in summer, fungicides should not be too high concentration, usually once every 7 days. This may be a common reason for the yellowing of the leaves of a crown.

Of course, the yellowing of the leaves is also related to the breeding method of the crown. For example, when the summer temperature is high, it should not be placed in a place exposed to the sun; watering is best in the morning or evening, because its leaves cannot withstand the temperature difference when exposed to the sun; if the soil has not been turned for a year or so, it should be turned in spring or autumn. These are the reasons why the crown leaves turn yellow at a few o'clock.

Learn how to deal with the yellowing of the leaves. At the same time, friends who breed the crown should pay special attention to the fact that the tubers of the crown contain poisonous plants, such as dizziness, vomiting, diarrhea and other symptoms if eaten by humans or animals. While mastering the breeding method of a crown, you should also know this common sense, so as not to cause unnecessary trouble to yourself.