The GrowCube is a smart plant watering kit currently crowdfunding on Kickstarter. The device can automatically water your plants, choosing the optimal time and volume of water to deliver based on the species. Soil moisture sensors provide real-time data to the gadget, which you can control via an app.
https://www.notebookcheck.net/Elecrow-s-GrowCube-is-a-smart-plant-watering-kit-with-soil-moisture-sensors.617117.0.html