You may divide the watering areas into zones, based mostly on the variety of vegetation and their water wants. A method vegetation differ of their watering wants is measurement: a tree will want extra water than a bush, or a smaller perennial plant. Pots will want a special watering regime, as will vegetable beds. One other distinction is in the kind of plant. Native and desert-adapted vegetation like mesquite or desert willow timber will use much less water than citrus and different fruit timber, for instance. It doesn’t imply which you can’t interplant these collectively; simply remember the fact that your irrigation system might want to replicate these variations.
You may work out how a lot your vegetation want by some charts accessible for the Tucson local weather, together with Brad Lancaster’s plant lists with water requirements, seasonal watering guidelines from the City of Tucson, or the very thorough drip irrigation guide from Arizona Municipal Water Customers Affiliation. There are different useful paperwork accessible, that are listed on the finish of this text.
One other factor to bear in mind when planning your system is that you’ll want to have the ability to transfer irrigation out to a tree’s dripline because it grows. Many individuals depart the irrigation in place for years after their vegetation have grown to many instances their authentic measurement — this can be a nice approach to stress your vegetation and to waste water! All the time plan for the ultimate measurement of the tree, shrub, or different plant, and be sure you can transfer the emitters outward away from the principle trunk or root ball because the plant grows. You are able to do this by both changing the micro-tubing because the plant grows, or by reducing an extended piece to start out with after which shifting it outwards. Most irrigation kits present plastic stakes which let you pin down the emitter finish of the tubing the place you need it to drip.