The Spruce Sensor’s soil moisture is expressed as volumetric water content (%). Simply stated, this is the quantity of water contained in the soil (with the soil itself, water, and air comprising 100%). Generally, soil moisture will range from 10% to 45%, but can be higher during and after watering. […]
Are Spruce Sensors required?
The sensors are completely optional, and the Spruce Controller can operate without sensors – but we really recommend that you have at least a few to unlock the full potential of the system. If you don’t have a sensor assigned to a particular zone, the watering schedule for that zone will […]
Noisy moisture data after watering
You may notice that soil moisture might fluctuate erratically either immediately after or during watering. Generally, you can expect moisture data to be less stable above 45% because the Spruce Sensor has been optimized to measure soil water content below field capacity or soil moisture saturation. Sensor readings will stabilize […]