We are aware that some jurisdictions have restrictions that require that watering be conducted only biweekly. Because the Blossom schedule is current week-based, this is a bit challenging to program, but it is possible with some manual intervention:
Set up a weekly schedule for how you want the system to run.
Go to the monthly calendar and turn off the required days for every other week.
This process should only take a couple of minutes and can set up your controller for months in advance. For more details, refer to page 43 of the Blossom Quick Start Guide.