In this study, the plant node was dried in an oven (40, 50 and 60 °C), shade and temperature-controlled microwave (40, 50 and 60 °C) methods. Statistically (p<0.05), the values closest to the color values of fresh grass were determined in an oven at 40 °C drying temperature. Effective diffusion values varied between 8.85×10-8 -5.65×10-6  m2  s-1 . While the activation energy was 61.28 kJ mol-1 in the oven, it was calculated as 85.24 kJ mol-1 in the temperature-controlled microwave. Drying data was best estimated in the Midilli-Küçük (R2 0.9998) model oven at 50 °C. The highest SMER value was calculated as 0.0098 kg kWh-1 in the temperature-controlled microwave drying method. The lowest SEC value in the temperature-controlled microwave was determined as 24.03 kWh kg-1 . It was determined that enthalpy values varied between -2484.66/-2623.38 kJ mol-1 , entropy values between -162.04/-122.65 J mol-1 and Gibbs free energy values between 453335.22-362581.40 kJ mol-1 . Drying rate values were calculated in the range of 0.0127-0.9820 g moisture g dry matter-1 in the temperature-controlled microwave, 0.0003-0.0762 g dry matter-1 in the oven, and 0.001-0.0058 g moisture g dry moisture matter-1 in the shade. Phenolic content 6957.79 μg GAE g-1 fw - 48322.27 μg GAE g-1 dw, flavonoid content 3806.67 mg KE L-1 fw - 22200.00 mg KE L-1 dw and antioxidant capacity 43.35 μmol TE g-1 fw - 323.47 μmol TE g-1 dw. The highest chlorophyll values were obtained from samples dried in an oven at 40 °C. According to the findings, it is recommended to dry the knotweed (Polygonum cognatum Meissn.) plant in a temperature-controlled microwave oven at low temperatures. In this study, in terms of drying kinetics and energy parameters, a temperature-controlled microwave dryer of 60 °C is recommended, while in terms of quality characteristics, oven 40 °C and shade methods are recommended.