Overwatered plants can sometimes recover on their own, but it depends on the plant and the extent of the overwatering. If the roots have rotted, the plant will likely not recover. However, if the overwatering has only caused the leaves to wilt, the plant may be able to bounce back.
Overwatering your plants often has a side effect that oxygen can't reach your plant's roots anymore. By letting the soil dry out, oxygen will once again be able to reach the roots. This is often enough to help your plant recover and you can water it again.
Let The Plant Dry Out
It can seem counterintuitive to let a plant dry out, but if your plant has been overwatered then it will need some time to properly dry out before the other problems can be addressed. This should only take a few days, and won't harm your plant.
You will need to take the appropriate steps to treat the root rot to give your plant a second chance. Unfortunately, if the root rot is left for too long and there are no remaining healthy roots, your plant can't recover.
Repot with new soil.
Fresh soil will help guarantee that any bacteria or fungus that might have formed will be mostly removed. It'll also supply nutrients that may have been depleted in the old soil and help the plant recover.
Hydrogen peroxide can help to control fungal growth and fungal infection, such as root rot, by preventing the growth of fungi. It can also help kill fungus and bacteria on plant roots.
Look out for signs of overwatering – including a limp plant, yellowing leaves, or dropping leaves. If you see these signs, test the soil with your fingers. It should be pretty obvious if it's soggy! Stop watering and let the soil dry out.
If your plant has been overwatered due to the lack of drainage holes, you should repot your plant as soon as possible.
Signs of root rot are slow growth, mushy stems, and wilting, yellow, distorted leaves (especially when the plant has been well watered, as wilting leaves can also be a sign of a dry plant).
The key is to be patient. Keep tending to your plant for a few weeks and then reevaluate. “Once you've taken steps to revive a dying plant, it can take up to a month before you start to see an improvement or new growth, so don't give up on it too soon,” says Valentino.
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.
The potted plants die when they are overwatered because the roots will not get enough oxygen to breathe as water fills up the airspaces present between the soil particles. This will cause decaying of the root and ultimately the plant dies.
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.
Don't just pour straight hydrogen peroxide on the roots. Instead, create a mixture of one part 3% hydrogen peroxide and two parts water, and put it in a watering can or spray bottle. You can either use it while the plant is still in the pot, or after taking it out of the pot.
1. If a plant is overwatered, it will likely develop yellow or brown limp, droopy leaves as opposed to dry, crispy leaves (which are a sign of too little water). Wilting leaves combined with wet soil usually mean that root rot has set in and the roots can no longer absorb water.
Below is a list of features you may notice if your plants have received too much water. Leaves: It's a good idea to examine the leaves and stems. Overwatered leaves and stems will be heavy and droopy.
“I would say overwatering is one of the biggest reasons for houseplant deaths. People tend to 'overcare' for their plants and over water. Overwatering can 'drown' your plants and lead to root rot. I would definitely under water than risk overwatering a plant.”
How to Save Overwatered Plants. Luckily, many plants can be saved if you notice the issue in time. At the first sign of overwatering, grab a bag of fresh soil and a 3% hydrogen peroxide solution.
Mix one part 3% percent hydrogen peroxide with two parts water and carefully pour it over the root of your plant system with a watering can or spray bottle. This will kill off the bacteria which cause root rot.