This communication presents the analysis for a greenhouse using Runge-Kutta methods. The energy balance equations have been written considering the effects of evaporation from the plant, conduction through the ground, ventilation, etc. The parametric study has also been performed to find the effects of various parameters, namely number of air changes/h, transmissivity (t), heat capacity of plants and movable insulation on the plant and enclosure room air temperature. Numerical computations have been performed for a typical day in the month of March for Delhi climatic conditions. It is observed that there is significant reduction of plant and room air temperatures due to an increase in number of air changes, the heat capacity of plants and the movable insulation.