Root rot is a relatively common houseplant disease that's usually caused by a bacterial or fungal infection. These pathogens thrive in wet soil and eventually cause a plant's roots to suffocate.
In the most extreme cases, when conditions are ideal for the fungus to spread quickly, plants can die within 10 days. If these symptoms occur in a plant, loosen the soil around the base of the plant with a hand trowel or shovel and remove the plant from the soil.
It is found in both indoor and outdoor plants, although it is more common in indoor plants due to overwatering, heavy potting media, or containers with poor drainage. The leaves of plants experiencing root rot often yellow and die, and if allowed to continue, the condition can be fatal.
It is not possible to reverse root rot. The treatment of this disease involves removing the affected portions of the plant. Once the rotting or dying parts have been removed, they can then be repotted in fresh soil to give the remaining healthy roots a fresh start. What does root rot look like?
The first signs of root rot will be above ground. As the roots stop functioning, your plant will start to yellow and wilt all over. If you have a plant that's made up of several stems in the same pot, it's possible only one stem will get root rot.
If you notice any of these signs, it's time to take your plant out of its pot and analyze its roots up close. "If the roots are brown or black and soft or mushy instead of a healthy, creamy white, it indicates root rot," says Neese. Once you diagnose root rot, it's time to do some damage control.
More severe infections may take longer, but you should notice new growth and healthier leaves quite quickly. Do you water a plant after repotting for root rot? No. If your plant is suffering from root rot, you'll want to refrain from watering your plant for about 1 week after repotting.
Once established, root rot is hard to treat. The best you can do is remove the parts of the plant that are dying (including the roots) and provide it with fresh soil. If the root rot is widespread and has affected most of the plant's roots and foliage, the plant may be beyond saving.
Can you reuse soil with root rot? We recommend sterilizing the soil before reusing the soil. This will ensure there were no diseases or fungus that were growing in the soil while the roots were rotting. Once the soil is sterilized, mix with new potting soil 50/50.
Root rot has two main causes: lack of oxygen and fungal infection. 1. Lack of oxygen: If a plant has been overwatered, has poor drainage, or its soil is too densely packed, this can cause a lack of oxygen. In these cases, the roots are essentially drowning.
Preventing root rot is simple. It's all about watering and drainage. Follow these simple rules and you will never see root rot in your plants. Give your plant proper drainage - Make sure your plant is potted in something with drainage hole(s), either a plastic nursery pot or a decorative pot that has a drainage hole.
Too much water also creates favorable conditions for the growth of soil-borne water molds and fungi. These soil-borne pathogens infect the roots, and they cause the roots to decay. Soil-borne water molds such as Pythium, and fungi such as Fusarium, are the usual culprits of root rot.
If the soil smells bad (like a swamp) or slightly sulphurous, that's another good indication that you may have some rot to deal with.
Is root rot contagious? Unfortunately yes, root rot can be transferred from one plant to another. The fungal spores are airborne and can also be transported by insects as well as dirty gardening tools.
Remove about one-third or more of the old potting mix surrounding the plant's roots. As it grew, your plant removed some or all of the nutrients in the current mix, so you'll want to give it fresh potting mix or soil. Pour a layer of fresh potting soil into the empty planter and pack it down, removing any air pockets.
Plants may appear wilted and thirsty, but take care to refrain from watering until about a week after re-potting to ensure that any roots damaged during re-potting have healed. During the recovery period, place plants in a cooler, shadier spot. Most potting soil contains fertilizer.
Another product that'll help prevent the spread of root rot is non-flavoured cinnamon. After having removed the dead roots, sprinkle a thin layer onto the healthy tissue before placing into a bed of new compost.
However, bottom watering is a more controlled method of watering your plants. By remembering to check your plant every ten minutes or so while it's sitting in water, you can significantly reduce your chances of overwatering and causing root rot.
Lack of oxygen in the water
Plants that grow in water absorb oxygen from the water, whereas regular soil plants get their oxygen from the soil. So, it is crucial to refill the water in your planters regularly to oxygenize the water and avoid root rot.
The fungus overwinters and survives for many years in the soil as spores. Long distance spread is by transplants and in soil on farm machinery. Spores are airborne in greenhouses. The disease is favored by cool soil temperatures.
Root rot is a very common houseplant disease that's usually caused by a bacterial or fungal infection on the roots of a plant. These microorganisms thrive in wet soil and eventually cause a plant's roots to suffocate and rot. Roots are also likely to rot when they are exposed to overly moist conditions for too long.