DIY: All You Need To Know About Garden Plumbing

We all love fresh vegetables.  Home gardening is a great way to use the land you own to produce organic complements for the table.  A personal garden can also bring the joy and satisfaction of a hobby.  There are many vegetables that grow well in home gardens: tomatoes, peppers, lettuce you name it.  All of these plants have something in common.  They need water; and where there’s water, there’s plumbing.  You could just unravel a nylon hose from your house to the vegetable plot, but you want an attractive and more permanent solution. What’s the answer? Install an all-encompassing irrigation system in your garden home.

garden home plumbing

Things to Consider

What is your main objective?  It is to get water to the plants.  Design and install a water line that can be adapted and customized to meet your future needs.  You can start by using a simple sprinkler system and later expand into an automated layout down the road.

How cold does it get where you live?  If it drops below freezing during winter months you’ll need to empty the water line to protect it from bursting.  That can be inconvenient.  Plan on installing your supply water line at least 42 inches underground and you won’t have to worry about it.

Are there any barriers between your house and the garden plot?  Foundations and concrete retaining walls can be hard to overcome.  Choose a path that can be easily accessed.

What materials are best for your soil and environment?  Some earth is relatively easy to dig through, but some places there are lots of rocks and tree roots.  You may want to consider renting an automatic trenching machine for these situations.  The elevation is another environmental consideration.  Water flows downhill.  Be sure that the angle of your piping allows the water to flow properly.  If you choose not to bury your pipe below the 42 inch mark, be sure to install your drain at the lowest point in the system.

HINT: Don’t mix your pipe types. The inside and outside diameters change depending on the function.  If you buy 60PSI piping, get the 60PSI fittings.

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What fittings will you use?  Garden hose spigots are common and finding the adaptors is relatively easy.  They are designed for the outdoors and perform well in the elements.  If you are hoping to reach multiple places, you should install multiple spigots for watering near the areas you need to water.  The plastic piping is flexible and can be installed with a slight curvature, but it is not designed for tight corners.  In the planning stage, determine what elbows and fittings are needed to navigate the garden plot.

pvc fitting

What pipe size should I use for the main run?  Since this is a basic water supply line, PCV piping will suffice.  Depending on how far you plan to run the pipe, you may need to adjust the diameter accordingly.  For most garden home plumbing, a one inch diameter pipe is sufficient.  The basic PVC fittings and glue will work.

Draw Up A Plan

I recommend taking some time to lay out on paper what you hope to accomplish in your garden.  Make a plan that can be rolled out in stages.  Perhaps one area will be for plants requiring copious amounts of water.  Another section can go a few days without as much water.  Plan to install spigots for each area.  If you don’t use them all right now that’s ok.  They will be there for your future expansion.  Be sure to put a valve at the highest point as well. This will allow air into the pipe which is necessary when you want to drain the system.  Design wooden casings for these access valve stations.  Then you can get to them easily for future maintenance.  I recommend using a four-headed water spigot and a flexible braided connector for attaching the in ground line to your house water source.

HINT: Once you have a basic drawing, take it to the supply store and ask a professional what they think.  Feel free to contact us for some suggestions as well.

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On Your Marks, Get set, Go!

Now it’s time to start the work.  You can dig this trench by hand, like they did in Normandy, or rent a trenching machine.  The machine is faster and more accurate.

Now adjust the grade.  Lay a piece of wood or pipe down into the trench and place a level on it. You can add or remove dirt until you achieve the appropriate slope.  Build the boxes that will house the shut off and/or drainage valves.  These are simple wooden boxes about one foot by one foot squared.

garden plumbing drainage

Now assemble all your piping, valves, and fittings.  Lay the piping out next to the trench and marking where you need to make your cuts for installing the fittings and valves.  Place you boxes in the trench at the desired position and level.  Lay the cut pipes in the trench and mark the wooden boxes where you want the pieces to enter, taking into consideration the grade slope.

HINT: Measure twice, cut once. Remove the boxes after marking and make the cut with a hole saw.

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Begin putting your fittings together.  Start from the supply line at the house and build from there.  Assemble all parts of the system before you start gluing.  Install a 90 degree elbow on the pipe In the trench.  Attach the flexible braided line to that.  This will connect to the four-headed adapter installed on the supply water line coming from your house.

Next proceed on the first valve connection box.  Ensure that your pipe line stays resting against the bottom of the trench. Push the pipe through the hole in the box and assemble any necessary fittings.  Threaded fittings should be wrapped in Teflon tape to ensure a proper seal.

HINT: at times these fittings can be hard to get onto the pipe.  You can Bentley heat the fitting causing it to expand slightly.  Be careful not to aim your touch directly onto the plastic pipe and heat all sides evenly.

After you have done the final fitting, glue all the pieces together.  Once an appropriate amount of time has past for setting the glue, test your pressure system.  Then you may back fill the trench.


We love fresh produce and gardening is the best way to get it.  No pesticides and lots of love.  Tell us you probably need assistance to get quality plumber by call garden home plumbing contractor. We are happy to help you with this install. For more business info you can visit Emergency Response Plumbers and get the lowest price. When you and your garden are flourishing, send us some pictures!

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