In the technological embedded world, IoT has taken a long gait towards making the society a smart society whether it is in terms of education, life style, health care or agriculture. Keeping into consideration various benefits of IoT, this research paper presents a working model of an IoT embedded smart polyhouse agriculture system. The system utilizes various sensors to collect environmental data, which is processed by a microcontroller and sent to the cloud for analysis. The proposed system is capable of controlling various actuators to maintain optimal growing conditions for crops, and alerts the farmer in case of critical environmental changes. Apart from this, it is a mobile connected agriculture system which connects mobile app with the farmer to remotely monitor and control the polyhouse environment, while data analytics provide insights that can help improve crop management. The proposed system has the potential to significantly increase crop yield and reduce water usage in agriculture, while also providing real-time monitoring and control for farmers.