Being a succulent, the aloe vera plant is one of the easiest plants for forgetful plant parents, traveling gardeners, and beginners alike (even during the winter!). It’s drought tolerant and can easily survive a few missed waterings; however, the more stress you put the plant through, the more likely you are to see problems start to rise. Pests, fungi, and even diseases are drawn to plants that have been weakened in some way. So if you think you have an unhealthy aloe plant, here’s what may be going on.
Yes! Just like people or pets, plants can get sickness and disease—and that includes aloe vera. Your plant will have different symptoms depending on the problem, similar to how a common cold exhibits differently from the flu. And even more complicated is the fact that individual plants are always susceptible to the same things. It’s important to familiarize yourself with the variety of plant you’re growing (in this case, aloe vera) and their weaknesses so that you know what to look for.
When it comes to an unhealthy aloe plant, there are a few different things you can look out for. Sometimes, the cause is as simple as under- or over-watering your plant; other times, you’ll have a disease or fungus on your hands.
Brown or black circular spots on leaves
Brown or black spots that form on the leaves of the aloe plant are symptoms of a fungal disease called aloe rust. These darkened areas oxidize and seal off from the rest of the plant, so you won’t see a large spread of the discoloration. This fungal infection is attracted to aloe plants that don’t have adequate sunlight or those that have leaves with stagnant water on them.
Unfortunately for aloe rust, prevention is the way to go. Be sure to thoroughly inspect an aloe plant before buying. If one at your home starts to exhibit signs, you’ll want to remove the diseased leaves with a sterilized pair of shears, repot in fresh soil, and make sure to provide proper care.
Mushy, dark lower leaves
Root rot, which is caused by overwatering, will often display physically through the lower leaves of your aloe plant turning dark and mushy. If you notice the bottom of your plant start to rot, chances are you’re giving it too much water.
To fix this problem, you’ll need to first remove your aloe from its pot, discard the old soil, and gently rinse off the roots. Examine the root system for any brown, mushy parts and remove them with sterilized scissors or shears. If there are any white roots left, repot your aloe in a clean pot with fresh soil; if there are no white roots left, it’s, unfortunately, time to discard the plant.
Mushy, collapsing leaves
Soft rot also causes mushy leaves, but not just near the lower part of the plant. If your aloe is suffering from soft rot, you’ll notice water-logged spots on the leaves of your aloe plant that slowly turn mushy and collapse.
Soft rot is largely caused by water that collects and sits in the crown of the plant. If you have a plant with soft rot, there’s unfortunately not much you can do to try saving them. Depending on how far along it is, you may be able to take a sterilized pair of shears, cut above a growth node on the stem, and pot the cut end in fresh soil to grow new roots; however, if any part of the upper portion of your aloe has soft rot, it won’t be viable.
Tip dieback is another indicator that you have poor-draining soil and an overwatered plant. Usually, this will start to happen before root rot takes hold, so if you notice the tips becoming water-logged, turning brown, and shriveling, you should repot the plant in fresh soil and change your watering habits before it’s too late.
The best way to prevent future problems and diseases, for any plant, is to keep it as happy and healthy as possible. Following the proper care requirements for a plant ensures that it’s in a stable, preferred environment while being able to grow strong.
For aloe plants, this means:
- Regular watering
- Bright, indirect light
- Well-draining soil
If you’re worried about watering too much, it’s always best to wait a few more days and then water, since aloe vera is relatively drought tolerant. With good, diligent care, you’ll have a thriving aloe plant for years to come.
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