This system will water your plants automatically, monitor the level of the water reservoir and will keep your plants happy on many aspects.
How to make a smart greenhouse using Arduino and Node MCU for IoT
Stay informed about soil-measurement by using Particle Photon.
This is the next step with an Particle Photon and softAP integration: cucumbers go online.
How to build a smart monitoring system (temperature, soil moisture, light level, humidity and air pressure sensors) for your plants.
A smart scarecrow on the field to keep a track of climatic condition. For need of irrigation/pesticides a drone will be sent to the field.