How Long To Water To Encourage Deeper Grass Roots - Landscaping & Lawn Care - DIY Chatroom Home Improvement Forum

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Old 10-10-2011, 04:13 PM   #1
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how long to water to encourage deeper grass roots

so I just planted new grass and it's been about a month so the grass is doing well. I'd like to switch from my twice a day for 20 minutes on each sprinkler to a two times a week-ish and longer, 30 minutes or so, to encourage deeper roots.

Any experience on how long the sprinklers need to go to properly encourage deep roots without wasting water?


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Old 10-10-2011, 09:55 PM   #2
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Length of time isn't what you're looking for, it's the quantity of water you apply. Ideally you want to apply about 1/2" of water twice a week. Really though it won't matter a lot this fall because the new roots won't get very deep until next spring anyway. Be sure to put on a good winter fertilizer look for help encourage root growth.


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Old 10-12-2011, 08:38 AM   #3
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With brand new grass, keep the soil moist until the seedling grass establishes. Also, use a fertilizer with high ammounts of phosphorus and potassium. Some areas ban phosphorus, but most have exceptions for establishment. The fertilizer breakdown is nitrogen, phosphorus, potassium. A good example of starter fertilizer is 20-20-10. After establishment, switch the watering to 1/2-1" of water, once or twice per week, early mornings.
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