The Paradox of the Drowned Plant Thirsting
When roots sit in standing water, root rot pathogens kill root capillaries. Consequently, even though the soil is soaking wet, the plant can no longer transport a single drop of water to its leaves, causing it to droop as if it were in a desert.
Physical Texture Comparison
Underwatered foliage feels paper-thin, crisp, and regains firmness quickly within hours of watering. Overwatered foliage often feels limp, cool, soft, and slightly mushy, sometimes turning translucent or developing black lesions.
The Pot Lift Metric
Moist potting soil is heavy; dry substrate is remarkably light. Lifting the pot with your hands is one of the most reliable observational tools available to home botanists.