Help with grassy weed identification
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- Posts: 52
- Joined: April 30th, 2021, 6:15 pm
- Location: Monmouth County, NJ
- Grass Type: Dead
- Lawn Size: 10000-20000
- Level: Some Experience
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- Posts: 95
- Joined: April 16th, 2020, 7:48 pm
- Location: Central Virginia
- Grass Type: Tall Fescue
- Lawn Size: 10000-20000
- Level: Experienced
Re: Help with grassy weed identification
It's poa trivialis. No labeled residential lawn selective herbicide that I know of. You'll need to either dig it up to also include the roots, then sod or re-seed. Or spray non-selective glyphosate to kill it and it's roots, multiple spray applications a week apart may be necessary for a total kill.
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- Posts: 6838
- Joined: September 14th, 2012, 10:53 pm
- Location: CT (Zone 6B)
- Grass Type: KBG, TTTF, TTPR, and FF (various mixtures)
- Lawn Size: 10000-20000
- Level: Experienced
Re: Help with grassy weed identification
Yup, textbook Triv. Dig out and/or kill (I prefer the latter and I also use multiple glyphosate apps with Ammonium sulfate and non-ionic surfactant added in) it now. Unless of course you like/want it in your lawn (but it doesn't sound that way!). Thankfully, it's still in the one-plant or a few-plants stage in that defined area. You can tell due to the central clump and outward spreading stems. The base portions of those stems near the soil will eventually tack down and form stolons. Once it starts spreading into the neighboring turf, it's hard to contain.
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- Posts: 52
- Joined: April 30th, 2021, 6:15 pm
- Location: Monmouth County, NJ
- Grass Type: Dead
- Lawn Size: 10000-20000
- Level: Some Experience
Re: Help with grassy weed identification
Thank you. If I kill this with Glypho now, will I have bald spots in the lawn all summer where it used to be? How would I rehab those areas please?
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