Brown Aloe Vera Plant (Aloetia cambogia) is one of the most common plants in tropical areas. It grows well in all climate conditions. However, it does not like direct sunlight or heat and will become damaged if exposed to these elements. If you live in a hot area where the temperature reaches over 100 degrees Fahrenheit, then your aloe vera plant may turn dark green color due to lack of water and nutrients. Other times, it turns brown because of excessive exposure to air pollution. In some cases, the aloe vera plant turns black due to fungus infection.

What causes aloe vera plant to turn brown?

The main cause of aloe vera’s brown color is fungi infections. These are caused by several types of fungi including Aspergillus fumigatus, Penicillium chrysogenum and Fusarium oxysporum. All of them cause the same symptoms. They produce toxins which affect the plant’s cells and eventually kill it. The most common symptom is wilting of the aloe vera plant. This happens when there is no longer enough moisture in the soil to sustain its life cycle. When this occurs, it becomes susceptible to other diseases such as powdery mildew, leaf spot, wilt and so on. These types of fungi are not visible to the naked eye. It is only when you peel off the outer layer of its skin that you can see brown patches or spots. As a result, most people think it is due to lack of water.

How to treat aloe vera plant turning brown?

If your aloe vera plant turns brown due to lack of water, then the best way to treat it is to give it more water. Usually, the plant can be saved if you give it water immediately. But, if it turns black and mushy, then it is probably too late to save it. It is best to throw it away and get a new one. Brown spots on aloe vera can also be treated with a fungicide spray or powder. You can get these at any local garden store. However, many of them contain chemicals which may damage your plants more than the fungi. It is best to consult with a professional on which fungicide will work best on your particular type of plant.

How to prevent aloe vera plants from turning brown?

Excessive sunlight exposure and dry soil are the two main reasons for wilting. Make sure that you water the aloe vera plant every other day. When you water it, make sure that the soil is wet all the way through. It should not be dry more than an inch below the surface. One way to test for this is by digging your fingers into the soil. If it is wet, then you should be good to water it. If it is still dry even after digging your fingers in, then it needs water.

Exposing aloe vera to sunlight all day long will cause it to turn brown and wilt. This happens because the skin of the leaves does not allow enough CO2 to pass through in order to carry out photosynthesis. Make sure that you have it in a place where it will be getting some sunlight but not throughout the day.

A good way to test this is by placing your hand a few inches above the soil. If you feel warmth, then it means that it has been exposed to sunlight for too long. It should feel lukewarm or room temperature.

Aloe vera plants also turn brown due to overwatering. This usually occurs when people water their plants once or twice a week.

Sources & references used in this article:

Evaluating the Effect of Aloe Vera Plant Ointment on Pain Reduction of CABG Surgery Ulcer in Diabetic Patients by K Babaei, S Nejati, F Ghesmati – … Biotechnology Research Asia, 2017 –

Nutritional composition by S Foster, RL Johnson – 2008 – National Geographic Books

Sources and possible mechanisms of action of important phytoconstituents with cardiovascular properties by R Petralia – US Patent App. 15/844,951, 2018 – Google Patents

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