Your fall lawn watering schedule should provide about 1 inch of water per week including rainfall. This amount keeps roots growing strong as they prepare for winter. Most lawns need less water in fall than summer, but they still need some.
I used to stop watering in September and my lawn paid the price. The grass went into winter stressed and came back weak in spring. Now I keep watering lawn in autumn right up until the ground starts to freeze. The difference in spring recovery is well worth the extra effort.
Grass roots keep growing as long as soil temps stay above 40°F (4°C). They need water to push deeper before winter locks the ground solid. Roots that grow deep in fall find water better next summer. Skipping fall water cuts this growth short.
Research from Minnesota backs up this approach. Keep your fall irrigation frequency going through September and October for best results. Lawns watered through fall come back stronger in spring. The water helps grass store energy in root systems before going dormant.
A simple rain gauge takes the guesswork out of fall watering. Set one up in your yard and check it after each rain. Subtract what falls from the sky from your weekly 1 inch target. Only turn on sprinklers to make up the difference.
I water in the morning during fall to cut down on disease risk. Wet grass at night in cool weather invites fungal problems. Morning water gives blades time to dry before temps drop at sunset. This simple change prevented a mold problem I had for years.
Cut back your watering as temps drop through late October. Grass slows down and needs less water when nights get cold. Drop to half an inch per week once daytime temps stay in the 50s. Your lawn will tell you if it needs more by losing its bounce.
Knowing when to stop watering lawn fall saves you from frozen pipe problems. Stop running your system once the ground freezes hard. In most northern zones, this happens sometime in November. Blow out your sprinkler lines before the deep freeze hits.
One deep watering right before winter helps your lawn enter dormancy in good shape. Soak the soil about 6 inches deep for this final drink. This moisture bank gets roots through the first weeks of frozen ground. Your lawn will thank you when spring arrives.
Read the full article: 10 Proven Fall Lawn Care Strategies for a Lush Yard
