Bunnings logo with a piece of holly.
Icon - Website - Mobile - Add to project list.svgIcon - Website - Mobile - Cart.svg

Sign in to your account

Project list

Sign in to your account

An automated garden sprinkler in action

Overview

The best place to start irrigating your garden is with a pen and paper. We'll show you how to measure and plot your garden perimeter, including any obstacles, and measure your water pressure to give you an accurate plan to irrigate your garden.

Steps

1Measure up and map your garden

Measure out your garden. Then note your measurements down on some grid paper - make 1m2 in your garden equal 1cm2 on your paper to keep things easy. Draw out the map, including any obstacles in your garden such as trees. You can now work out how many metres of polytube you're going to need for your irrigation system.

A Bunnings team member measuring the length of a garden bed

2Measure your water pressure

To work out how many and what type of sprinklers, pop ups or drippers, you'll need to measure the water pressure on your garden tap. To do this, measure the time in seconds it takes to fill up a 9L bucket at your tap on full pressure. Then using the size of the bucket, which in our case was 9L, divide it by the seconds it took to fill up, then multiply by 60. For example, if it took 20 seconds to fill up then 9 ÷ 20 x 60 will give you the number of your maximum flow rate per minute. This will help you choose what products you need to irrigate your garden. 

A bucket being filled form an outdoor tap, with an iPhone being held dangerously close to flowing water

Suggested products

More D.I.Y. Advice

Health & Safety

Asbestos, lead-based paints and copper chromium arsenic (CCA) treated timber are health hazards you need to look out for when renovating older homes. These substances can easily be disturbed when renovating and exposure to them can cause a range of life-threatening diseases and conditions including cancer. For information on the dangers of asbestos, lead-based paint and CCA treated timber and tips for dealing with these materials contact your local council's Environmental Health Officer or visit our Health & Safety page.

When following our advice in our D.I.Y. videos, make sure you use all equipment, including PPE, safely by following the manufacturer’s instructions. Check that the equipment is suitable for the task and that PPE fits properly. If you are unsure, hire an expert to do the job or talk to a Bunnings Team Member.