Ask a Question forum: Hedge watering

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Merced CA
mrosson
Feb 10, 2018 8:46 PM CST
Planting 210 feet of podcarpus plants 4 feet on center.

I have 1'' pvc on one end with about 35-40 Gallons per minute coming from my well.

What is my best options for drip irrigation on them?
I want the most cost effective and least maintenance as possible.

Soil is mostly clay.

I was thinking about Netafim drip line with built in emitters. If i do go with these the only options are 12'', 18'', and 24'' spacing and .4, .6, or .9 GPH.
If I use the Netafim, which spacing and gph hour should i use? Also can i just run 210 feet of line down to the end?

I just need some advice on the best way to do this?

thank you.
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
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DaisyI
Feb 11, 2018 6:00 PM CST
Welcome!

The great thing about drip systems is that they are low pressure - the line doesn't need to be full of water to work. Is your hedge on level ground? If it goes up or down hills, the system may not work as well. I don't think the length of the system would be a problem though.

I built one at our CA home that was a couple hundred feet long with a 50 to 60 foot drop. I had to put shut off valves (set to about half on) in the line to slow down the water. Smiling

I don't think the lines with built in emitters are such a good idea if your well water is anything like ours was. The emitters are going to clog with rocks, silt and mineral buildup and if they are built in, there is no way to change or clean them.

You may be better off buying 1/2 inch drip and 4 gallon emitters at Lowes or Home Depot. Emitters that you can replace when they clog, get stepped on and broken or chewed by squirrels is a real plus in my mind. It also solves the problem of the emitters being in the wrong place.

Another problem solved is the number of emitters - if they are 4 ft apart, you will have 52. One ft apart, 210. 52 emitters will take less water to run than 210. Don't count on the "gallons per hour" estimates - drip doesn't work that way.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

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Name: Philip Becker
Fresno California (Zone 8a)
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Philipwonel
Feb 15, 2018 9:36 AM CST
Your water pressure, gallons of water per hour available, will determine how many, and size of emitters.
I recommend you to Google.
I built my garden drip system, its 150 feet, with 1gph emitters every foot.
I hooked it up to an automatic sprinkler valve. Water pressure is 40 PSI. On three quarter inch pipe.
It works great. No pressure regulator required.
If your going to build one yourself, they make a tool, there kind of like plyers, to punch holes in dripline for the emitters to go in. Make job much easier. Don't buy the screwdriver shaped hole punch, there a pain in the kister ! Angry

😎😎😎
Anything i say, could be misrepresented, or wrong.
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
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DaisyI
Feb 15, 2018 12:43 PM CST
I had 6 drip lines watering 2 acres powered by well water. There was only a problem on the one line that went down hill - the rest were level or had level spots. I used a nail to punch my holes because I couldn't keep track of the punch thing. Don't fall for pressure regulators and don't worry about pressure unless it becomes an issue then add a second line. This is not rocket science, its tinker toys. Once you figure out how long it will take to water your hedge, you can add a timer and make your life easier. I had one line in my orchard that watered for 3 days every two weeks.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

Webmaster: osnnv.org

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