Plant nursery is a place where plants are propagated, fostered, cultivated, and sold for use in a personal garden or for commercial purposes. Improved quality seedlings are grown under favorable conditions until they are ready for planting on a small or large scale. Whenever people want to buy plants, they visit the plant nursery. The nurseries must be able to assist with all the types of enquiries regarding plants and purchases. Sometimes people do not have certain information about plants and it may happen that the seller also can-not give exact information regarding plants. Similarly, it is quite difficult to detect plant diseases with human eyes. There is a need to develop an auto-mated system to detect the plant diseases. In such a scenario, developing a mobile application can help customers to identify a plant, get information about plants, buy plants and detect plant diseases using plant images. Therefore, the system takes an image of a plant leaf as input, processes it and uses deep convolutional neural network to identify a plant and detect disease if any. The model is trained with a large dataset of plant leaf images consisting of different species and diseases. The trained model is lightweight and is used to build an android application. Thus, the developed mobile application is user-friendly and very useful in identifying plants and detect diseases by just clicking an image of the plant using mobile.