Irrigation Schedule

Start Event

Plants should be watered early in the morning or late in the evening, when temperatures are lower and evaporation is reduced. Add the "At Sunrise" start event and set it to "1 hour before sunrise".

Conditions

The conditions define whether it rained recently or whether rain is expected, so watering only starts when needed.

Add a "Precipitation Amount" Condition

Select "Last 3 Days" and set it to "less than 10 mm". If your soil dries quickly (for example sandy soil), shorten the window or reduce the threshold.

Add a "Precipitation Amount" Condition

Add another precipitation condition for "Today" and set it to "less than 3 mm".

Add a "Precipitation Amount" Condition

Add a third precipitation condition for "Next 3 Days" and set it to "less than 5 mm". For clay soil, a longer forecast window can also work.

Comparison Operator

Set the comparison operator to "AND" so watering only happens when all precipitation checks are below their thresholds.

Steps

Add a "Control Accessory" Step

Add a control accessory step, select your irrigation controller, and set it to turn on.

Add a "Notification" Step

Optionally add a notification to confirm that watering has started.

Add a "Wait" Step

Add a wait step with a 5-minute delay.

Add a "Control Accessory" Step

Add another control accessory step for the same controller and turn it off.

Add a "Notification" Step

Optionally add a second notification so you'll know when watering has finished.

Tip: You can duplicate individual steps by tapping the icon on the left.

Final Overview

Each day the workflow checks past, current, and upcoming precipitation. If all values are below your thresholds, watering starts one hour before sunrise and stops automatically after the configured wait time.

Tip: In workflow settings, choose a device to receive an alert if an execution error occurs.