Installing Irrigation Systems for Hedging

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Planting a hedge an ensuring it’s swift establishment is no small task. However, with the assistance of an effective irrigation system, the management of water requirements can become a lot easier. Eventually leading to healthier, bushier and more beautiful hedges. This guide provides an overview of the process for installing an irrigation system.

Thuja Brabant Hedge - Shutterstock

Contents of This Article

Identifying Your Water Source

The initial step in this process involves pinpointing the source of water that you will use for your irrigation system. This could be your home’s main water supply line or perhaps a well. It’s crucial to measure the water pressure and flow rate from this source, as it will directly impact the functioning of your irrigation system. In situations where water pressure is low, the inclusion of a pump may be required to boost flow. Otherwise, a pressure reducer may be needed if the pressure is too high.

Deciding on Your Hedging Layout

Next, it’s good to draft a layout of your hedging. This layout should provide information on the length and width of the hedge and identify the types of plants involved. This plan will serve as your road map when installing the irrigation system, outlining precisely where the irrigation lines need to be situated.

Choosing Your Irrigation System

With your layout at hand, you can now make a considered decision on the most appropriate irrigation system. For hedging, a drip irrigation system is often the most suitable choice. This type of system delivers water directly to the root of each plant, ensuring a steady supply of moisture while also minimising wastage. This direct approach also helps reduce the likelihood of leaf diseases and fungal growth that can occur with other watering methods, such as overhead sprinklers.

Implementing the Drip Irrigation System

Once you’ve finalised your preparation, you’re ready to proceed with the installation!

1. Setting up The Drip Line

Arrange your drip line along the base of the hedging. If your plants are large in size, additional lines may be needed to ensure complete coverage.

2. Installing Drip Emitters

Fix the drip emitters along the line at regular intervals, ensuring they’re placed near the root base of each plant. The spacing of these emitters will depend on the hydration needs of your hedging and the emitter’s water output rate.

3. Connecting to the Water Source

Connect your drip line to your water source, ensuring to include a backflow preventer, filter, and pressure regulator. These elements ensure that the water flows optimally and that no contaminants enter your water supply.

4. Incorporating a Timer

A timer can boost your irrigation system’s efficiency by scheduling watering cycles. This helps ensure your hedging receives water during optimal periods, typically in the early morning or late evening, to minimise evaporation.

5. Testing the System

Once the installation is complete, turn the water on and inspect your hedging. Check for any leaks and confirm that each plant is receiving sufficient water. Adjustments can be made as necessary.

A man installing drip irrigation - Shutterstock

The Benefits of an Irrigation System

The advantages of installing an irrigation system for your hedging are numerous. One of which is that the system guarantees a consistent and appropriate supply of water, promoting strong and healthy growth. Furthermore, it saves you the manual labour of daily watering and contributes to water conservation by focusing water delivery directly at the roots.


While the task of installing an irrigation system for hedging might seem daunting at first, with thorough planning and a touch of patience, it is entirely manageable. The end result is a vibrant, low-maintenance hedging that is both environmentally friendly and water-efficient – a worthy reward for your effort.

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