Sasha CampbellHave you ever noticed your houseplant wilting even though the soil is still wet? Root rot could be the reason.
Root rot is one of the most common problems indoor gardeners face.
It can happen any time of year. However, it is often more common during cooler months because many houseplants grow more slowly and use less water. As a result, the soil may stay wet for longer periods [1].
The good news is that many plants can recover if you catch root rot early. Let’s take a closer look at how you can naturally control or fix root rot in indoor plants.
Identification
What is root rot, you may ask? Root rot is a problem that causes plant roots to decay. It usually happens when roots stay wet for too long.
At first, your plant may look slightly droopy. Over time, the leaves may turn yellow and begin to wilt.
Healthy roots are firm and able to take up water and nutrients. However, when soil stays wet for too long, there is less oxygen around the roots. This creates conditions where harmful fungi and bacteria can grow and damage the roots [2].
As the roots die, the plant can’t get what it needs, so it begins to look sickly above ground. If the problem is not fixed, the whole plant can collapse.
This is why catching root rot early is so important.
Nearly any houseplant can suffer from root rot. However, some are more prone to it because of their growth habits and sensitivity to wet soil.
Succulents and cacti are especially vulnerable. Since their roots are adapted to dry environments, they can decay when exposed to moisture for too long.
Even hardy plants like pothos, spider plants, and snake plants can develop root rot if they are kept too wet. Indoor-grown herbs, such as basil, mint, and rosemary, can also be affected.
Tropical plants, including calatheas and alocasias, are quite sensitive as well. They thrive on moisture but also need well-drained soil.
Signs of root rot include:
- Yellow leaves
- Wilting even when soil is wet
- Mushy, brown roots
- Bad smell from the soil
- Slow growth
How to Control and Treat Root Rot Naturally
Below are some home remedies and natural solutions for treating root rot in potted plants.
1. Provide Sufficient Drainage
Healthy roots rely on oxygen. When soil remains soggy, air pockets disappear, depriving roots of the oxygen they need to survive [3].
That is why providing proper drainage is essential. Therefore, make sure your pot has drainage holes at the bottom so excess water can escape freely.
If your pot does not have any, you can carefully drill holes or switch to a different container.
2. Do Not Put Rocks or Gravel at the Bottom of The Pot
Many people were told to place rocks or gravel at the bottom of a pot to improve drainage. However, this old gardening myth can have the opposite effect.
Instead of improving drainage, a gravel layer can sometimes trap extra moisture in the soil above it. This can keep roots too wet, increasing the risk of root rot.
3. Diluted Hydrogen Peroxide
After removing the old soil, you can gently rinse away any remaining soil and inspect the roots.
Some gardeners use a diluted hydrogen peroxide solution during this process. However, it should be used carefully because strong solutions or frequent use may harm healthy roots.
If you decide to try it, mix one part 3% hydrogen peroxide with two parts water.
4. Choose the Right Potting Mix
Plants need a balance of moisture retention and drainage. If the soil stays wet for too long, the risk of root rot increases.
For most houseplants, loose, airy, high-quality mixes work best. They allow enough water to soak in while still letting air reach the roots.
A good potting mix should feel light in your hands and crumble easily. Heavy, compacted soil traps too much moisture.
So, it is always better to start with a mix designed for the type of plant you are growing rather than using whatever soil is available.
Tank’s Pro Potting Mix is a good option for growing vegetables and herbs in containers.
5. Prune Your Plants
When a plant is struggling, it cannot support as many leaves or stems.
Remove only damaged leaves and stems. Healthy green leaves help the plant make food and recover.
6. Don’t Add Too Much Fertilizer
Adding fertilizer to a stressed plant can sometimes make things worse. Wait until the plant starts growing again before feeding it.
7. Promote Good Airflow
When it comes to houseplants, airflow matters more than most people realize. Stagnant indoor air can slow evaporation and create conditions where fungal problems are more likely.
Placing your plants in an area with natural airflow can help the soil dry properly between waterings.
8. Do Not Overwater
Overwatering is the most common cause of root rot. Many people water on a schedule, but plants don’t always need moisture at the same rate.
Soil type, temperature, humidity, and sunlight all affect how quickly water evaporates.
Low light can also increase the risk because plants use water more slowly when they are not getting enough sunlight.
Therefore, water only when the top few inches of soil feel dry. For succulents and cacti, allow the soil to dry completely before watering again.
9. Repot Your Plant
Repotting is one of the most important steps in saving a plant from root rot. However, do not reuse potting mix from your houseplants.
Old soil from a plant with severe root rot may contain harmful fungi or bacteria. It is safest to throw it away and use fresh potting mix, especially if you plan to grow other plants.
Before repotting, remove any soft, brown, black, or mushy roots with clean scissors or pruners. Healthy roots are usually firm and light-colored and should not have a bad smell.
Avoid removing healthy roots, as they help the plant recover.
10. Use Pasteurized Commercial Potting Mix
Garden soil can contain pests and disease-causing organisms. It can also become heavy and compacted when used in pots, making it harder for roots to get air.
Instead, choose pasteurized commercial potting mixes made specifically for container plants. These mixes are designed for container gardening and help improve drainage while reducing problems caused by pests and other harmful organisms.
11. Disinfect Tools and Clay Pots
Whenever you treat a plant with root rot, disinfecting your tools is essential. Scissors, knives, pruners, and other tools can carry fungal spores from one plant to another.
Therefore, clean your tools with rubbing alcohol or a properly diluted bleach solution. Clay pots should also be cleaned thoroughly. You can use hot, soapy water for disinfecting pots.
12. Arber Bio Fungicide
Arber Bio Fungicide is another option gardeners use to help protect plants from certain fungal and bacterial diseases.
It works best when combined with proper watering and good drainage. However, it is not a replacement for fixing watering problems or poor drainage.
To use it, mix the recommended amount with water and use it accordingly.
Prevention Tip
The best way to deal with root rot is to prevent it. Use the right soil, avoid overwatering, and choose pots with good drainage.
Takeaway
Once you understand what causes root rot and how to treat it, you will have a better chance of saving your plants and preventing future problems.
Natural methods can help, especially when you fix the conditions that caused root rot in the first place. Focus on problems like poor drainage, heavy soil, or overwatering.
With consistent care and attention, you can reduce the risk of root rot and keep your houseplants healthier.
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