What are the latest causes of black rot in succulents in winter?

The cause of black rot in succulents in winter is a fungus called “Fusarium oxysporum”, which can both infect plants and survive in the soil, and can infect many plants. After a succulent is infected with black rot, at first yellowing appears on the leaf surface, with grayish-white lesions on the back and a grayish-white mold layer appearing, then it spreads to the leaf surface, and finally causes the leaves to curl, dry up, and even die. It is a common plant disease.

Usually, black rot prefers to appear in muggy and humid environments, but in winter the temperature is lower and the environment is also drier, so why does black rot appear? Qinnongwang here introduces the reasons why this disease appears in winter:

1. Watering method

Some friends water their succulents in winter by pouring water straight down from directly above the succulent without any concern, so water accumulates in the leaf center, and combined with frequent watering, when sunny weather comes, the water temperature in the accumulated area rises higher and higher, which also creates muggy and humid conditions. Under such conditions black rot is very likely to occur, and at the same time it can also cause pest problems;

2. Overwatering

In winter succulents are almost always in a state of halted growth, and in winter succulents are all placed indoors, where ventilation in winter is very poor. At this time, if you still water according to the usual amount, the succulent cannot absorb the water, and the environment is not ventilated, so over time it is very easy to cause black rot.

If black rot has already occurred, then you can only cut away all the black rot areas, then apply fungicide to the cut, and observe after a period of time. If the black rot continues, then you can only steel yourself and throw it away.

So how can black rot be prevented in winter? In fact, winter is indeed not the peak season for black rot. As long as care is proper, black rot can still be avoided. In winter you only need to give the succulent a little water, and pour it directly onto the soil. Never pour it from directly above the succulent, and try to let the water have zero contact with the succulent; if too much water is poured, find a well-ventilated place and leave it there for a period of time. Succulents can still tolerate short-term water accumulation or overly wet soil.

The above is the related introduction brought to you by Qinnongwang about black rot in succulents in winter. It should be noted that this “Fusarium oxysporum” can survive in the soil, so if a succulent dies after being infected with this disease, the soil used for planting must be disposed of, and the flowerpot must also be disinfected, to avoid the fungus in the soil infecting other plants.