From my perspective, the most immediate and distressing sign is the change in my leaves. My beautiful, plump, green or variegated leaves are designed to store water and photosynthesize efficiently in dappled light. When the sun becomes too intense, it's akin to you standing bare-skinned under a desert sun for too long. I begin to develop a "sunburn." This manifests as discoloration—my vibrant green starts to fade to a pale, yellowish, or even a stark white. In severe cases, the tips or patches of my leaves may turn brown or reddish-brown, becoming dry, crispy, and scarred. This is actual tissue damage; those cells are dead and cannot be revived. It's a clear, desperate signal that I am under photonic assault.
My second line of defense is a physiological response to prevent excessive water loss. In a desperate attempt to reduce my surface area exposed to the dehydrating sun, my leaves may start to curl inward or close up tighter than usual. You might notice me becoming thinner and less plump as I rapidly use up my internal water reserves to stay cool, a process similar to sweating. My normally firm, turgid leaves may feel softer or even wrinkled to the touch. This is not a sign of thirst from under-watering alone; it is a combined crisis of losing water faster than my roots can replenish it due to the overwhelming heat and light stress.
If the excessive sun exposure is chronic rather than a single acute event, my entire growth pattern will change to tell you a story of stress. Healthy growth for me is compact and symmetrical. Under too much sun, my new growth may emerge stunted, deformed, or much tighter than normal, as I am constantly in a defensive posture. I might stop growing altogether, entering a state of shock and preservation instead of spending energy on new leaves. The beautiful stress colors that some gardeners desire—like red or purple tints—are, in truth, a sign of mild stress. When these colors become intense and are coupled with the signs above, they are a banner waving, indicating that I am beyond my comfort zone and suffering.
When you notice these cries for help, your intervention is my salvation. Please relocate me immediately. I need a new home with bright, but indirect, light. An east-facing windowsill where I can bask in the gentle morning sun is ideal, or a spot a few feet away from a south or west window shielded by a sheer curtain. Do not simply move me from full sun to deep shade, as this could shock me further; transition me gradually over a week. Please, resist the urge to over-water me to compensate. My roots are likely also stressed, and soggy soil will only lead to rot. Water me only when the soil is completely dry, and ensure my pot has excellent drainage. Finally, be patient with my recovery. The existing scars and discoloration are permanent, but with proper care, my new growth will emerge healthy, green, and strong, telling you the story of my rescue.