When we rolled out the ability to adjust crop coefficients in the 2.5 release we set the default cool season grass crop coefficient to 70%. After some more research and empirical evidence the new default for cool season grass is 80%.
How does this affect existing users? Existing cool season grass zones will not get this new default unless manually adjusted.
Zone --> Advanced Settings --> Crop coefficient.
How does crop coefficient affect flex scheduling?
The best lever for adjusting watering frequency. Each crop type has a coefficient. Crop coefficients are properties of plants used in predicting evapotranspiration (ET). The coefficient is the ratio of ET observed for the crop. If ET is our zone checkbook debit, crop coefficient will offset ET slightly and not remove as much from our account.
Example: ET for the day is .2 inches. Crop coefficient for cool season grass is 85%. The debit for the day is .17 inches (.2 x .85)
Increasing crop coefficient increases watering frequency, decreasing crop coefficient decreases watering frequency.
Recommend moving the crop coefficient lever +/- 10% increments and see if that gets watering to the correct cadence. Crop coefficient can be modified from Zone Menu > Advanced Settings > Crop Coefficient