Based on other posts in the community forum and my own experience using a Rachio controller, it is not strictly necessary to know and input the square footage of each zone to use a Flex Daily schedule on your Rachio controller. The Flex Daily schedule primarily relies on factors such as soil type, vegetation type, nozzle type, root depth, and local weather conditions to calculate the watering needs. However, knowing the square footage can be helpful for more accurate water usage tracking and reporting. As such, the irrigation schedule will likely not be affected by the square footage entered into the zone settings. However, If you want to manually fine-tune your watering schedule to have more precise control over actual water usage (gallons), you can input the square footage of each zone, which can provide more accurate estimates of water consumption and help in monitoring water usage.
