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New lawn

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From: ernest Monk
City:
St. Joseph, IL
When should you mow a new lawn. Should you spray for weeds and crabgrass. Lawn was planted on June 1st. Grass is about l and 1/2 inches high to 2 inches. It has been watered every day or every other day. Thanks for your help.

 
Extension Message
From: Sandra Mason
State Master Gardener Coordinator
Champaign/Ford/Iroquois/Vermilion Unit
slmason@illinois.edu
Ernest, Good questions. Mow a new lawn when it gets to be about 3-3 1/2 inches tall and mow down to 2 1/2-3 inches. you could go a bit shorter once we get cooler and hopefully wetter weather. Make sure you water thoroughly so the top 8 inches or so is moist. Light frequent sprinkling can cause the roots to grow just at the surface. I would wait until October to control any broadleaf weeds with herbicide. I would wait until next April to apply preemergent crabgrass control if needed.

 
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