Watering needs will vary based on climate.
We’re based out of Florida. We have a very humid climate, with morning dew, & frequent summer rains, which helps keep our garden soil moist. So, watering with the Garden Grid every 2-3 days for about 10-15 minutes for mature plants works well with this type of climate.
In drier climates, such as the southwestern U.S. & even in the Rocky Mountain regions, you will want to water more frequently. Dry, hot summers in Arizona for instance will likely have you watering daily, if not short waterings in the morning and night!
Since watering needs can vary based on climate, soil moisture meters can come in handy. Or you can simply use “The 2 Inch Rule” to check your soil by hand. Here’s a quick video about doing that.