Appropriate environmental conditions and effective use of water and other natural resources are necessary for optimum plant growth and better yields, for use in commercial and research greenhouses. Automating and data acquisition process of the soil conditions and various climatic parameters that govern plant growth, makes the information collection at high frequency and controlling them at lesser labor requirements. The data is acquired by a microcontroller and the data is calibrated, the information obtained is displayed using 16x2 LCD, whereas the existing systems are manual and employing complex modules for keeping the user continuously informed about the changes in conditions inside the greenhouse, but are unaffordable, bulky, difficult to maintain and less accepted by the technically unskilled farmers and workers. The design and development of "PIC-Microcontroller Based Green House Monitoring System", is a Real time automated embedded system with good response time, versatile, easily transportable & is a cost effective system. The system is monitoring and controlling the parameters such as temperature, humidity, soil moisture and light intensity, which gives optimized plant growth and yield. These parameters were controlled using actuators. The acquired data is displayed automatically very often.