Thank you so much for your quick response.
This is my soil type from UofA:
They say Gilman Loams are 2in/ft which is 0.17in/in, the same as Rachio’s loam setting. I think the water holding capacity is the same thing as Rachio’s available water. It’s good that my soil’s availability does not vary with depth.
I was following Moon Valley’s chart:
I was watering ONCE a week in the winter. TWICE a week in the spring and fall and THREE times a week in the summer. The duration was incorrect, which is why I was probably wasting a lot of water. I’ve only had Rachio in the coldest time of year. What is the frequency and duration of your waterings with your drip in the spring, summer, and fall?
The 0.5in/h figure came from Rachio and is in line with over 2GPH emitters. Most of my trees have several emitters and there are shrubs underneath the trees that share the water and extra emitters. Water Use it Wiseley said plants could share the water from the emitters.
https://www.gilbertaz.gov/home/showdocument?id=33896
I think that my drip has high pressure too so it’s wise to error on a high flow rate.
You can see my root depth setting falls in the range for the groundcover/vines, shrubs, and just short of the recommendation for the trees. I errored on the high end of the crop coefficient to satisfy the needy plants.
Most of my plants are several years old. I hand water some of the newer unestablished plants extra water between Rachio waterings. I have been keeping a close eye on all the plants, and they don’t seem to be wilting yet. It’s hard to tell this time of year though because I have several deciduous plants.