Black rot in succulents has a high mortality rate, but doing this can reduce losses by 90%

6th

?

ForewordQian Yan

Love succulents, love life (WeChat ID: duorou91) Reply "community" and show off together with 200K succulent lovers!

Reply "beautiful succulents", "summer care, watering, leaf propagation, soil mixing, pest removal, black rot" in the backend to view related care knowledge.

Reply with a succulent name such as "White Peony, Ruby, Laura" to view the latest succulent gallery.

Everyone is welcome to share the original to Moments~ Everyone is welcome to share the original to Moments~ If you need to reprint or submit, please contact Editor-in-Chief WeChatduorouzw01。

Of course it's not just this succulent lover. Many succulent lovers may encounter black rot and leaves falling off at the slightest touch while caring for succulents. Regarding this situation, many succulent lovers don't know how to handle it. Today the editor-in-chief will tell everyone about it, hoping it will help everyone grow succulents.

Symptoms of black rot:

After extensive investigation, it was found that in eight or nine out of ten cases where flower lovers' succulents drop leaves, it is black rot. The specific symptoms are: waking up to find that the succulent has dropped many leaves; leaves falling off at the slightest touch; the fallen leaves having a water-soaked condition (sometimes the leaves look normal).

These are all characteristics of black rot. In the earlier stages, you cannot see symptoms of black rot in the roots and stems; it needs to be cut open to be discovered. In the later stages, it is easier to judge. If black rot is causing the succulent plant to drop leaves, then you need to behead and propagate it as early as possible, so there may still be a chance to save it; in the later stages, there is basically no saving it.

So, when leaves fall off at the slightest touch, sometimes it is a sign of succulent black rot. At this time, throw away the black-rotted leaves. Generally speaking, black-rotted leaves basically have no hope even for leaf propagation. Then check whether its stem and root system have turned black. If discovered too late, black rot really cannot be saved.

At the beginning, cut off the black-rotted part with a sterilized small knife, cutting as cleanly as possible, then let the wound dry in a place with diffused light and good ventilation before potting.

Secondly, black rot is also somewhat contagious. If one succulent is found to have black rot, then the other succulents should be isolated together.

Black rot generally occurs frequently in summer, and during regular care, pay more attention to ventilation.

An in-depth explanation of black rot

[In one simple sentence] Once a succulent plant has an area that loses color and becomes soft and black, it is rotting. If it is rotting, you must immediately, cut, it, off. Knives and hands must be disinfected before and after to avoid infecting other plants. If it is a fungal infection, use a fungicide (such as: carbendazim) to spray the plant. The wound must be completely dry before it can go into soil.

Black rot/rot transmission routes: air, contaminated flower pots & plant containers

1. Description of black rot

Black rot/rot is one of the most common diseases in succulents, usually caused by fungal infection due to overwatering or an overly humid growing environment.

Most succulents grow in desert climates and are adapted to an extremely arid growing environment, so they must never be overwatered, and the soil should be allowed to dry completely between two waterings.

Another cause of rot is soil medium that is not breathable. Be sure to use a breathable, drainage medium to ensure water does not accumulate at the stem for more than a few minutes (the medium I use is usually one where water poured in can fully penetrate immediately).

Some insects, such as mealybugs, can also cause black rot/rot, especially root mealybugs. The wounds created when these pests suck plant sap can cause fungal infection. Black rot/rot has many manifestations, and by the time you discover it, it is often already too late.

Always be alert to areas of discoloration on the plant, as well as stems and leaves that have become soft and mushy.

There are many types of black rot/rot, briefly introduced as follows:

Crown rot: the plant rots internally, causing the plant to collapse.

Stem rot (mainly Euphorbiaceae): the stem rots, usually occurring at the base of the stem.

Spotted stem rot: caused by orange stink bugs (Orange stink bugs).

Fungal rot: brown, water-soaked stains appear on the plant.

Mesemb rot: occurs on the branches and stems.

Black rot: often occurs after cotton aphid or root mealybug infection.

2. Notes on treatment methods for black rot/rot:

When handling plants with black rot/rot, be sure to keep tools clean and sterile, and be sure to wash your hands carefully before touching other plants.

Crown rot:Use a sharp knife to cut away the infected part, then stuff crushed charcoal and sulfur into the wound. The wound should be completely dry.

Neck rot:Cut off the rotten part, and treat the rest as a stem cutting. Remember it can only go into soil after the wound is completely dry. [Neck rot caused by cotton aphids/root mealybugs]

Fungal rot:Use a clean knife to cut off the damaged part, and cover with sulfur. Spray the plant with a mixed solvent of benomyl (translator's note: a fungicide) and mancozeb.

3. Season of onset:

Why does black rot mostly occur in summer, why is it more common after overwatering or rain, and surprisingly many succulent lovers think the succulents died from heat.

Actually, understanding this problem is very simple. Fusarium oxysporum is a fungus, and its siblings are mushrooms. Why do mushrooms easily grow after summer rain? Because it is warm and humid, and reproductive conditions reach their peak. The most suitable growth temperature for Fusarium oxysporum is 27 to 32 degrees, so in summer, please pay more attention.

The above is an introduction to and prevention and treatment of succulent black rot. Finally, may everyone never encounter succulent black rot, and may all succulents grow healthily and beautifully!