Banyan bonsai banyan is a plant with strong vitality and plasticity, which is often appreciated by potted plants. But sometimes banyan trees will have some problems that affect their appreciation, such as the leaves turning black. So, what is the reason why fig leaves turn black, and how to deal with it? Here, Uncle Gardener will introduce the causes and solutions of several banyan leaves blackening! 1. The black banyan leaves caused by freezing may be because the temperature in winter is too low and the leaves turn black due to freezing. Pick the frozen leaves and wait for the new leaves to grow. The environmental temperature of potted banyan trees in winter should be kept at 10- 15 degrees, and watering should be reduced appropriately. Move the banyan tree with black leaves to a higher temperature environment for nursing and reproduction. When the temperature is above 25 degrees in spring, new branches and leaves will grow. If the temperature is too low and the time is too long, there will be no vitality. Black banyan II The roots of banyan trees were damaged by excessive watering. You can dig them out of the soil, dry them in a cool and ventilated place, then cut off the rotten roots, soak them in 500 times carbendazim or sprinkle them on the roots for disinfection and sterilization, and then leave the trunk. It is best to trim the branches and leaves on plants, change pots and bury all the roots in the sand. You can also put a white bag on it. 3, environmental pollution dirty banyan leaves can not be washed clean in places with much coal pollution or dust, and sometimes they are dirty and black. At this time, just put the potted plants in a clean and ventilated place and then scrub the leaves with a soft cloth dipped in water. Banyan bonsai warmly reminded the banyan tree to be placed in a sunny place outdoors, so as to get more sunshine. Don't water it often, and be careful not to accumulate water, otherwise the roots will rot easily, and you can trim them properly during the growing period to prepare for later plastic surgery.