0% (bone dry) and 100% (fully saturated) look like for your soil. Different soil mixes hold water differently, so calibrating after install makes the dashboard readings meaningful.
When to calibrate
- Right after pairing a new sensor (see Install and activate a moisture sensor).
- After repotting into a different soil mix.
- If readings drift — for example, the plant looks dry but the sensor reports a high percentage.
Calibrate the dry point
1
Remove the probe from the soil
Wipe the moisture contacts clean and let them air-dry completely.
2
Record the dry reading
In the VerdantBot app, open the sensor and tap Calibrate → Set dry point. The app stores the current reading as
0%.Calibrate the wet point
1
Saturate the soil
Water the plant until water just begins to drain from the bottom of the pot.
2
Reinsert the probe
Push the probe back into the soil so the contacts are fully covered.
3
Record the wet reading
Tap Calibrate → Set wet point. The app stores the current reading as
100% and interpolates everything in between.Next steps
Sensor types
Compare models and reporting intervals.
Fix inaccurate readings
Diagnose readings that look too high or too low.