New lawn taken over by crabgrass?
- andy10917
- Posts: 29744
- Joined: February 23rd, 2009, 10:48 pm
- Location: NY (Lower Hudson Valley)
- Grass Type: Emblem KBG (Front); Blueberry KBG Monostand (Back)
- Lawn Size: 1 acre-2 acre
- Level: Advanced
Re: New lawn taken over by crabgrass?
Use products containing fair amounts of Quinclorac, or get straight Quinclorac and MSO (Methylated Seed Oil). Apply as the label directs.
Quinclorac is one of the safest products for newly-seeded/young lawns.
Quinclorac is one of the safest products for newly-seeded/young lawns.
- ken-n-nancy
- Posts: 2571
- Joined: July 17th, 2014, 3:58 pm
- Location: Bedford, NH
- Grass Type: Front: KBG (Bewitched+Prosperity); Side: Bewitched KBG; Back: Fine Fescue Blend + Prosperity
- Lawn Size: 10000-20000
- Level: Experienced
Re: New lawn taken over by crabgrass?
It's not nutsedge. I'm speculating that Andy's recommendation of quinclorac with MSO isn't for nutsedge, but is rather for something that is more likely in the crabgrass family. (Quinclorac plus MSO is the weapon of choice for germinated crabgrass.)
For future reference, nutsedge is very distinctive. The definitive way to identify nutsedge is the triangular stem, just above the roots and before the leaves all separate from the stem. You can feel this by rolling the stem in your fingers or by cutting a cross-section of the stem. See the photo below for a cut cross-section of the stem. (Photo from the nutsedge page at Michigan State University: https://www.canr.msu.edu/resources/yellow_nutsedge)
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