From my perspective, the first sign of trouble is a feeling of suffocation. My roots, which are designed to breathe air from the tiny spaces in the soil, are instead drowning. The excess water fills all the pores, pushing out the oxygen. This anoxic environment is a death sentence for my root cells. They begin to die, turning from firm and white or light tan to a mushy, dark brown or black. A foul, decaying smell often emanates from the soil—this is the smell of my tissues rotting and the harmful anaerobic bacteria thriving. Above the soil, my guardian might notice my leaves turning yellow, becoming limp, and dropping prematurely. I am not being dramatic; I am desperately sacrificing parts of myself to conserve what little energy I have left because my compromised root system can no longer support my full canopy.
The single most critical action is to stop the drowning. I must be removed from the waterlogged soil immediately. Gently lift me from my pot. My stems and remaining healthy roots are incredibly fragile right now. Carefully wash away the soggy, old soil from my root ball under a gentle stream of lukewarm water. This will allow for a clear assessment of the damage. Now, with sterile pruning shears or scissors, every single soft, brown, and smelly root must be cut away. This is a painful but necessary amputation. Any remaining rotten tissue will continue to decay and spread the infection. After the pruning, it can be helpful to dip my remaining healthy roots in a fungicide solution or a natural antifungal like cinnamon powder to protect the fresh wounds from further fungal attack.
I cannot be returned to the old, contaminated soil or pot. My old pot must be thoroughly scrubbed and sterilized. The new pot is crucial; it must have excellent drainage holes, and it is best to choose one that is only slightly larger than my remaining root system. A pot that is too large will hold excess soil that stays wet for too long, repeating the entire traumatic cycle. The new soil medium must be fresh, sterile, and exceptionally well-draining. A mix designed for cacti and succulents, or a standard potting mix amended heavily with perlite, orchid bark, or coarse sand, is ideal. This new environment will provide the aeration and drainage my damaged roots desperately need to recover and eventually regrow.
After repotting, do not water me immediately. My roots are wounded and need a few days to callous over. Watering right away would risk reinfection. Please place me in a location with bright, indirect light. Direct sunlight would be too stressful for my weakened state. When it is finally time for my first drink, water me sparingly, just enough to lightly moisten the new soil. Then, allow the top few inches of soil to dry out completely before even considering watering again. The urge to "help" by giving me extra water or fertilizer must be resisted. Fertilizer would burn my tender new roots and add further stress. My sole focus now is on regenerating a healthy root system. This process will take time, patience, and very careful observation of my condition.