The conversion of agricultural land into residential areas has resulted in a decrease in the availability of agricultural land, so it is necessary to implement an intensive agricultural pattern with a high level of productivity. One of them is by applying a vertical farming pattern or known as verticulture. The technique of planting verticulture is an agricultural cultivation system solution that can be applied in densely populated areas because it does not require large areas of land. Driven by technological developments in the current era, verticulture no longer use conventional methods. Automation processes using microcontrollers have been widely used in this field with the aim of monitoring, controlling and predicting. The purpose of this research is to build a mobile application on a watering system with vertical planting techniques. This research begins with designing a system using Arduino Uno, Soil Moisture Sensor, SD Card Module, and ESP-01. After that, calibrate the sensor and sensor sensitivity using relative frequencies. Then analyze the stored soil moisture data using a boxplot, pearson correlation, and wilcoxon test then integrate the data in a mobile web application. The research results show that the soil moisture of each sensor has a different pattern and average. The sensor can detect soil moisture in dry and wet conditions well so that it can automatically water plant.