How to water an established lawn

A lush green lawn doesn’t happen by chance. It takes time and dedication with regular mowing, fertilising and watering at least 2-3 times a week. This will keep the lawn actively growing and naturally crowd out invading weeds.

• The best time to water lawns is early morning or late afternoon, avoid watering at night as the grass stays wet and gives rise to fungal disease.
• Deep waterings are better than light sprinkles of water, to encourage roots to penetrate.
• A well strong well established root system gives a lawn resilience, reducing the effects of adverse seasonal weather.
• Correct mowing and feeding, and smart watering will keep your lawn green and resilient year-round.

Water deeply, not often 

Deep watering encourages deep root penetration, while light, infrequent watering encourages shallow roots that aren't able to withstand drought or adverse weather.

• Aim to soak the soil to 100-150mm depth per watering, 2-3 times a week.
• Depending upon soil and sprinkler type, it may take 20-30 minutes.
• Total water required per week is 300 – 400mm. 
• Adjust watering according to the weather.

Water at the right time

• Early morning is best, less evaporation and disease risk. Evening watering can increase fungal problems if grass stays wet overnight.
• Avoid watering in the heat of the day.

Adjust watering for the seasons

• Spring: Water as needed during dry spells
• Summer: Increase frequency, especially during hot or windy weather
• Autumn: Reduce watering as temperatures cool
• Winter: Usually, no watering required unless conditions are unusually dry

Signs your lawn needs water

• Grass turns dull green or bluish.
• Footprints remain visible after walking across it and the grass feels ‘crunchy’.
• Growth slows and leaf tips begin to curl, dry patches form.
• Unwanted weeds invade.
• If these signs appear, it’s time for a deep water.

Got a new lawn? Read our tips for watering it here >