There are plenty of smart gardening systems around these days. You could always build your own if you know a thing or two about sensors. This project by Akin Yildiz shows you how to build your own Darth Vader Smart Garden. You are going to need a soil sensor, NeoPixel RGB LED, Nodemcu board, and a few other parts to get started.
This smart garden sends you an e-mail when you need to water your plants. It also changes the color of its eyes to grab your attention. More information is available on Instructables.