Effective tracking of leaf moisture is crucial for plant and crop health. As technology advances, new sensors are being created to monitor moisture levels. At present most of the techniques of plant health monitoring are based on indirect soil moisture content measurement. The contact mode of soil moisture measurement suffers from quick degradation of sensors, variation of reading due to variation of soil composition from place to place. This paper proposes a wearable capacitive sensor for real-time and continuous evaluation of leaf moisture content. The leaf wetness of the hibiscus plant was determined by measuring the capacitance value by using leaf as the dielectric layer between two parallel plate electrodes. Capacitance values were measured at three excitation frequencies (1, 10, and 100 kHz). The results demonstrate that adding moisture in the soil around the plant increased the capacitance value, whereas natural drying decreased it. This happens because at high moisture content soil more water molecules transmit to the leaves through root causing increased effective dielectric constant. But effective dielectric constant reduces when soil has less moisture leading to lower capacitance value.