From my perspective, a Jade plant (Crassula ovata), soft and wrinkly leaves are my most direct and desperate way of communicating a significant water deficit. My thick, fleshy leaves are designed to store water, acting as a personal reservoir for dry periods. When you touch them and they feel soft and pliable, like a deflated balloon, it means these reserves have been severely depleted. The wrinkles are the physical manifestation of the loss of turgor pressure—the water pressure within my cells that keeps me firm and structurally supported. I am essentially cannibalizing the water stored in my leaves to keep my core functions, like maintaining my roots and stem, alive. This is a survival mechanism, but if it continues for too long, the cells will sustain permanent damage, and the leaves will die and drop off.
Paradoxically, your kindness can also cause my leaves to become soft and wrinkly, though often with a different texture. If my soil is constantly saturated, my roots are unable to breathe. They require oxygen from the air pockets in the soil to function. Waterlogged soil suffocates them, leading to root rot. Once my roots are damaged and decayed, they become incapable of absorbing any water, no matter how much you provide. This creates a situation where I am surrounded by water yet dying of thirst. The above-ground symptoms are identical to underwatering: soft, mushy leaves that may eventually turn yellow or brown and drop. You can distinguish this by checking my soil; if it is persistently wet and my pot feels heavy, the issue is likely too much water, not too little.
My distress signal of wrinkled leaves may not always be about the water you apply directly, but about my ability to access it. This circles back to the health of my root system. Beyond rot from overwatering, my roots can become pot-bound—a tangled, dense mass that struggles to effectively take up moisture and nutrients. Alternatively, if I was recently repotted, my roots might be damaged or shocked and are not yet functioning properly. In both cases, water is available in the soil, but my compromised roots cannot draw it up to my stems and leaves, leading to the same symptoms of dehydration.
While water is the primary suspect, my environment plays a crucial supporting role. If I am exposed to extreme heat, such as intense, direct sunlight through a hot window or a heat vent blowing directly on me, I will lose water through transpiration much faster than normal. This can accelerate the drying-out process, causing my leaves to wrinkle even if your watering routine hasn't changed. Conversely, a sudden cold draft or temperatures that are too low can shock my system and damage my cells, impairing their ability to hold water, which can also lead to softening.