What if the leaves of evergreen turn yellow?

Evergreen is the most common ornamental plant, many people like breeding, leaf yellowing is a relatively easy phenomenon in evergreen breeding, although evergreen breeding is relatively easy, leaf yellowing may not be a big problem, but it also affects the ornamental value of evergreen and the beautification effect of home, what to do with the yellowing of evergreen leaves? let's take a look!

Yellowing of leaves caused by normal aging

[cause of yellowing] if properly maintained, the yellowing of evergreen leaves is a normal metabolism, and as the plant grows, the lower leaves begin to age and yellowing.

[solution] there is no need to worry about the yellowing of the normal aging leaves of evergreen, but the yellow leaves, residual leaves and some old leaves in the lower part of the plant should be pruned in time.

Yellowing of leaves caused by too much watering

[cause of yellowing] evergreen is the fleshy root system, and it is most afraid of stagnant water, so it can not be watered more, otherwise it is easy to cause rotten roots and yellowing of evergreen leaves.

[solution] it is OK to irrigate the right amount of water at ordinary times, and it is better to keep the basin soil dry rather than too wet. Except for keeping the basin soil moist in summer, watering should not be too frequent in spring and autumn. But must keep the air moist, such as dry air is also prone to evergreen leaves yellowing and other adverse phenomena.

Yellowing of leaves caused by too much sunlight

[cause of yellowing] Evergreen likes semi-shady environment, avoid strong light in summer, strong light is easy to cause scorched edge or even withered yellow of evergreen leaves, too strong light is easy to be burned by the sun, too weak light is not easy to blossom and bear fruit, affecting the ornamental effect.

[solution] in spring, summer and autumn, evergreen should be shaded by more than 60% and 40% in winter.

Yellowing of leaves caused by low temperature

[cause of yellowing] the suitable growth temperature is 15-18 ℃, and the lowest temperature should not be lower than 5 ℃, otherwise it is easy to cause freezing injury and cause leaf yellowing.

[solution] the winter dormancy of evergreen should be moved to the greenhouse, placed in the sunny place, the temperature should be kept above 10 ℃, and new leaves can germinate again the following year.

Yellowing of leaves caused by excessive fertilization

[causes of yellowing] excessive fertilization is another common cause of yellowing of evergreen leaves, mainly caused by fertilizer damage, damage to the roots of evergreen, and so on.

[solution] liquid fertilizer is applied every 10-15 days in evergreen growing season, and fertilization should be stopped in winter.

Yellowing of leaves caused by insect diseases

[cause of yellowing] Brown soft scale pests can also cause evergreen leaves to yellow. when brown soft scale harms evergreen leaves, they generally cluster on the leaves or tender leaves, sucking plant sap and excreting mucus at the same time. Its excretion is easy to cause a large number of coal fouling bacteria to multiply, blackening stems and leaves, affecting plant photosynthesis, resulting in weak growth, yellowing leaves and hindering ornamental.

[solution] few plants have been killed, or the number of insects is small. Generally, bamboo slices and other things can be used to scrape off the insect body. During the incubation period, 40% dimethoate EC can be sprayed with 1000 times (or 40% omethoate EC 1000 times). It can also be killed by spraying 1000 times of imidophos EC.

Yellowing of leaves caused by dirty leaves

[cause of yellowing] Evergreen should pay attention to keeping its leaves clean and tidy. If too much dust accumulated on the leaves affects photosynthesis, it will also cause evergreen leaves to turn yellow.

[solution] every once in a while, we should pay attention to wiping the leaves with a clean wet rag to keep the leaves clean.