Technology has significantly improved every area of life, including farming and business. The evolution of agriculture basically dictates our way of life. Researchers are working to integrate modern technologies in agriculture to develop new methods for enhancing healthy agriculture and output. The "internet of things" branch of computer science provides protocols and techniques for integrating a range of electronic devices to automate physical processes. Due to a shortage of skilled gardeners, people in big cities are finding it difficult to maintain their own gardens. This research study describes an Internet of Things (IoT)-based smart garden monitoring system that uses a NodeMCU microcontroller to allow users to monitor the temperature, humidity, and wetness of their indoor plants and gardens. A prototype has been constructed to show how the recommended approach is used in the real world. A Blynk application has been made to display the real-time profiles of environmental factors including temperature, humidity, and wetness. This technology will let users take better care of the growth and health of the plants in their gardens. The need for gardeners and the challenges of keeping up gardens in big cities are replaced by this scientific endeavour. To build smart cities, this study intends to introduce and promote IoT innovation in our society.