Sure @brad. If I’m wrong, please tell me ! According to my soil survey map you have a link to on your website (http://websoilsurvey.sc.egov.usda.gov/App/HomePage.htm), I have Antho soil loam. I’m getting the watering info. from the plant watering guide here, which is specifically for the Arizona Desert:
http://wateruseitwisely.com/100-ways-to-conserve/landscape-watering-guide/
I have various sized shrubs, but use a 3’ canopy here to find a happy medium. The table below suggests 8 gallons of water required to wet the root zone for 3’ canopy shrubs.
For trees I’m using 4.5ft, even though I have some ficus trees that must be pushing 20ft canopies, I also have some rather young trees on the same zone. Assuming the 6ft, 26 gallons are required.
My simple math to get a duration is as follows:
Plugging through their online calculator (step 3 here http://wateruseitwisely.com/100-ways-to-conserve/landscape-watering-guide/plant/) I get the same following result:
I love the way the ‘As Needed’ schedules throttle the intervals. The shrubs “As Needed” schedule is repeating every 9 days this month, moving to every 6 days in July. That’s right where I want to be in the chart above. Likewise, the trees go from every 10 days in April, to every 7 days in July. Again, right where I want to be according to the chart above. However, please do tell me if I’m missing something on the long run times!!!
thanks,
Dave