Culpeper Landscaping & Design | 22701
You may have noticed that it’s been a bit warm of late. While the heat makes me a little cranky, newly installed plants will be just fine IF you keep them well watered. Here’s how I take care of new plantings: Continue reading “Watering Your New Northern Virginia Landscape in the Summer Heat”
This is a question I get quite a lot. In an ideal world, this is the order of operations:
There are several good reasons for this. First, the guys planting the trees and shrubs can swing wildly with picks and shovels without fear of hitting a buried irrigation line. Second, the irrigation guys know exactly where the trees and shrubs are, so they can position the heads and adjust the spray so they’re not hitting shrubs. If it’s an extensive planting job and the irrigators get there first, there will be lines run right where trees and shrubs need to go. Mr. Murphy and his law will see to that.
If your irrigation company and your landscape company won’t coordinate with one another, well… that’s the level of service I provide. I’d love to talk to you about your project.
I’ve had homeowners paralyzed with fear, unwilling to make changes to their landscape because of the terror that lurks below the surface. No, not Tremors (though that may be some of Kevin Bacon’s finest work) – their irrigation system. Once you know how your system works, it really isn’t that terrifying.
Here’s a basic diagram of an irrigation system layout:
Some homeowners are terrified to even bump against an irrigation line. Folks, it’s not a water main. The valves have to be on before water flows through the lines. Let’s follow the water through your irrigation system:
Where the irrigation system taps into your household water supply, code requires a backflow preventer. This prevents anything in the irrigation system water (dirt, sand, garden chemicals) from flowing back in and mixing with your tap water. This valve is sometimes located in the basement, sometimes outside.
Every system should have one. If yours doesn’t have a main shutoff valve, that’s worth a call to get one installed. Often they’re located at the backflow preventer, but not always. Even if your backflow preventer has a shutoff valve, if the backflow is in the basement you should have a shutoff valve outside.
Your irrigation system will have a main feed line that runs from the house to the valve manifold. This line is always charged (has water running through it), which is why a system shutoff valve is so important. If you break the main line, it’s the part of the system that will stream water until it’s shut down.
Water flows to the valve manifold and stops until the appropriate valve is opened. Each zone on your controller has its own valve, so when your front shrub zone comes on, that valve opens and water flows to the zone until the controller closes the valve again.
When the valve opens, water fills the pipes in that zone and comes out the sprinkler heads (or drip tubes, or flood bubblers – whatever’s at the end of the line). When the valve closes, there’s no longer pressurized water in that zone, although you may have water dribbling out of the lowest head in the system for a few minutes. That’s just gravity and is perfectly natural.
As you can see, irrigation systems are very straight forward to understand and not at all terrifying. You may still want to have a professional service your system (and I strongly recommend a pro to install your system), but at least now you know how your system works – and that you’re not going to blow up the world if you nick a line).