Epic irrigation tips for your outdoor space
Luke • 25 September 2019
Why irrigation is an important component to your landscape design

With the arrival of spring, many people are starting to get their gardens and outdoor spaces ready for summer. The influx of warmer weather and a dry winter here in Christchurch has meant many gardens require regular irrigation to encourage growth and thrive in our drier climate. I am often asked by clients, how often should you water your gardens and lawns to achieve good growth and plant health.
 General guidelines for driplines and lawns
- Turn your timer on when daylight saving starts
- Turn your timer off when daylight saving finishes
- In times of heavy rain, while irrigation is turned on, an irrigation system may need to be manually turned off to allow the soil to drain.
- Automatic irrigation is not a silver bullet and can cause just as much harm as under-watering.
- Good regular deep watering (long periods of time, once or twice a week) is more beneficial to the garden than short shallow waterings (20 minutes or less every day)
I would recommend for a start that a baseline setting be used for the bulk of the irrigation, with manual cycles added when required to ensure adequate moisture be maintained in the garden areas. Over a short time, a natural pattern will emerge as to if and when manual cycles are required, and these could then be added to the automatic program, or baseline settings reduced if required.
Garden beds - recommended baseline settings
All garden beds once a week for 1 hour (estimated it could be less). If required add an additional manual cycle three to fours days later. If the additional manual cycle becomes regular add it to the program or increase watering time to 1.5 - 2 hours (estimated). If adding multiple days ensure there are at least 2-3 days between waterings.
 Recommend: 
Digging a small hole in the garden to inspect soil moisture levels as required. Hold a handful of soil in your hand and roll it into a sausage. If it breaks up and crumbles the soil is too dry, if it makes a muddy mess on your hands it is too wet, If it rolls into a nice sausage shape it is ideal.
Lawns – recommended baseline settings
All lawns 30-45 mins one to twice a week. Please note this is dependant on weather conditions. Be aware you are only trying to keep the top 300-400mm moist.
 Watering times guidelines
Set the baseline settings into the controller and set this as 100% on the seasonal adjust. In spring and autumn, the watering requirements are less than in the height of summer. Recommend using the seasonal adjust starting at 30-40% in early spring and increasing this up as the heat comes on in January. At the height of summer, the seasonal adjust may be well in excess of 100% depending on the season. As the temperatures start decreasing in autumn start reducing the seasonal adjust back down. The autumn decrease will more than likely mirror the spring settings, Please note this will be dependant on weather conditions.
As a qualified horticulturist 
EPIC Landscape Design in Christchurch understands Christchurch's and Canterbury's unique climate so we can advise on the best irrigation regime for your unique outdoor space. For irrigation plans, landscape designs and more contact 
Luke on 027 688 4155 and get the landscape of your dreams.
Epic News

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