No. There is no reliable evidence for a baking soda root rot cure. A plant that wilts and yellows makes you want a fast fix from the kitchen. But the trusted extension sources behind this guide list no baking soda remedy. The real root rot treatment takes more work. And it saves far more plants than a spoonful of powder ever could.
Root rot starts in the soil, not on the surface. Healthy roots need air pockets in the mix so they can take in oxygen. When potting mix stays soggy and airless for too long, those pockets fill with water and the roots can no longer breathe. Overwatering is the usual cause. A pot with no drainage holes makes it worse, since the extra water has nowhere to go.
Then the trouble spreads. The starved roots begin to decay, turning soft, brown, and mushy instead of firm and pale. As they rot, fungi in the wet soil move in and feed on the dying tissue. From there the rot creeps up toward the healthy roots. This is why the plant above the soil starts to wilt and yellow even though you keep watering it.
This is why a surface treatment cannot help. Once a root has gone dark and slimy, the tissue is dead and will not come back. You cannot sprinkle anything on the topsoil to revive cells that have rotted away. Baking soda just sits on top. It does nothing about the wet, airless soil deep in the pot. And that soil is where the real damage keeps going.
The good news is that you can often fix root rot with steps the research actually supports. The whole point is to get the surviving roots out of the wet mess and back into air. Move fast once you see the warning signs, because every day in soggy soil costs you more healthy root.
Start by sliding the plant out of its pot so you can see the root ball. Rinse the old soil off under a gentle stream of water and look closely. Cut away every root that is soft, brown, or smells sour, using clean snips. Keep only the firm, pale roots that snap or hold their shape. Wipe your snips with rubbing alcohol between cuts so you do not spread the rot to good tissue.
Now give the plant a fresh, dry start. Repot into fresh, well-draining media in a clean pot that has good drainage holes. A mix with some perlite or bark helps water flow through instead of pooling. Throw out the old soggy soil, since it still holds the fungi that caused the problem. From there, water less often. Let the top inch of the soil dry out between drinks so the roots finally get the air they were missing.
Baking soda, cinnamon, and hydrogen peroxide get passed around online as quick root rot cures, but none of them reverse roots that have already decayed. Trust the unpot, trim, and repot routine instead. Reaching for a kitchen cabinet fix wastes the days your plant cannot spare.
One last thing trips up a lot of owners. A wilting, droopy plant does not always have rot. A root bound plant wilts in much the same way, because its packed roots dry out too fast even right after you water. The two problems look alike but need opposite fixes. Root rot comes from soil that is too wet, while a root bound plant suffers in soil that drains too quick.
So before you treat anything, slip the plant out and check the roots. Mushy and brown means rot, and your job is to cut, repot, and water less. Tight, circling roots that fill the whole pot mean the plant is just cramped, and it needs a bigger home and looser roots. Either way, the cure is in your hands and a clean pot, not in the baking soda.
Read the full article: Root Bound Plants: Signs, Fixes, and Care
