sj, Are you watering from a well or low flow source? What is your water source and flow rate from that source? What is the corresponding water pressure? How much area are trying to grow at one time? What are the sprinkler heads you are using? 25 minutes is a long time to irrigate seeded mulch at one time if you are just trying to maintain moisture in the mulch. I guess I am missing something. Why not establish grass in smaller areas at a time instead of the entire area. You will have to explain in more detail how you want your system to operate. It seems a little too elaborate as I read it. Aloha

Check your local codes... probably will need a backflow preventer. Toro just came out with a timer that allows you to program a chip on your pc, then you plug the chip into the timer. HD carriers them now.

Hi, Marleah, Since you're in Oregon, I assume you don't have or need an irrigation timer or drip irrigation? I ask because a standard drip irrigation timer for hard-wired irrigation valves is just fine to use as a timer for "misting" cuttings here on the NorCal coast. My timer has 3 programs for each valve and 2 or 3 start times/cycles for each program (I can't remember all the details of that clock). I set up the timer so that it sprayed cuttings with a micro-sprayer at 10am, 11am, 12PM, 1PM, 2PM and 3PM. I found I didn't need mist every 10 minutes and I didn't have to use a mist emitter. I used a specialized Israeli-made micro-sprayer that produces a perfect globe of spray (no dry spots). Everything in that little greenhouse (it was constructed of heavy clear plastic sheeting over white pipe) rooted like crazy. In fact, I left one end open for improved ventilation. It got nice and hot but didn't fry the cuttings. Depending on the scale of your propagation, I know a non-misting propagation alternative for you. Read about Jill Perry and Mel Hulse's Rubbermaid Terrarium set-up. You'll notice that Mel grew his cuttings in 3 inches of potting soil in a closed Rubbermaid box. The brand is important because sunlight degrades these plastics. Rubbermaid lasts longer than Sterlite. I propagate in Rubbermaid boxes in a slightly different way: I put my cuttings in small pots of potting soil, using only Supersoil. The pots are either bands, 4 inch pots or the slightly larger 4 x 6 pots (taller that 4 inches, obviously). Depending on the heat and humidity, I do one of two thing. I place the pots inside the Rubbermaid right side up, with the top on. If I overwater, I can pour out the excess. Or I place the pots on the ground under an arbor where they get filtered light and turn the Rubbermaid upside down over them, without the top. My method requires periodic watering, but it also provides better drainage. In summer, with softwood, cuttings took about 4 to 6 weeks. Softwood cuttings are labor intensive but very satisfying. The very small plants produced take a lot of irrigation and care after they root: grow out takes a lot of time, space and irrigation. Three boxes is about all I can handle at a time. One additional benefit of the Rubbermaid issue is that it gives young plants a very controlled environment after rooting but before they really take off. Softwood cuttings in the terrarium (with the top off). Cuttings aren't beautiful, don't worry how they look: After rooting, newly potted cuttings in the terrarium (with the top off) are provided moisture control while they adjust: HTH, Cass Here is a link that might be useful: Rooting roses in a terrarium

Marleah, Check out mcmaster.com Search for single function timers. Mine is a NCC Model CKK-01800-461; it does very short intervals, like 10 secs on and 10 mins off. In addition to a timer, you will also need a solenoid valve and nozzles, also sold by McMaster. Hope this helps. dave