Cool Season Weed ID Thread - What is it and how do I kill it?

Need help identifying a weed?
abrahamsirv
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Re: Cool Season Weed ID Thread - What is it and how do I kill it?

Post by abrahamsirv »

I need help! I've done what I could to ID this one but I don't know. My observations:
Lime green color, taller than KBG, wide blade (6 to 8mm), no clasping auricles, membranous ligule, no hairs, rolled leaf.
I thought it was quackgrass (not anymore), but the absence of clasping ligules and I couldn't find any rizomes.
It's popping up all over, I can't see distinct clumps, so maybe not a fescue variety (K31 maybe).
Hope the photos help, I can provide more.
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Codeman336
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Re: Cool Season Weed ID Thread - What is it and how do I kill it?

Post by Codeman336 »

Thanks @dicko1, @abrahamsirv, and @shadowlawnjutsu! I was mainly focused on the Poa Annua. Since we're going into summer, should I hold off to put down pre-emergent until late summer since what I have is already there and it won't start germinating again until then?

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shadowlawnjutsu
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Re: Cool Season Weed ID Thread - What is it and how do I kill it?

Post by shadowlawnjutsu »

Codeman336 wrote:
Wed May 12, 2021 2:14 pm
Thanks @dicko1, @abrahamsirv, and @shadowlawnjutsu! I was mainly focused on the Poa Annua. Since we're going into summer, should I hold off to put down pre-emergent until late summer since what I have is already there and it won't start germinating again until then?
It will eventually die off on summer just be on time on your fall pre emergent. I used to have a lot of poa annua at the beginning of the spring. I’m hand pulling them as much as I can.

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1028mountain
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Re: Cool Season Weed ID Thread - What is it and how do I kill it?

Post by 1028mountain »

Can someone tell me what this is and how to get rid of it? I have a fair amount of it.

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Deadlawn
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Re: Cool Season Weed ID Thread - What is it and how do I kill it?

Post by Deadlawn »

1028mountain wrote:
Wed May 12, 2021 7:10 pm
Can someone tell me what this is and how to get rid of it? I have a fair amount of it.

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That looks like sedum, a succulent garden plant that apprently escaped cultivation. Transplant some into a garden bed. It makes a nice mat of green.
Tier 1 - I just want something green. Perennial "weeds" that stay green year round are welcome.

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Re: Cool Season Weed ID Thread - What is it and how do I kill it?

Post by g-man »

@abrahamsirv It looks like K31, but I'm not sure. Since it is growing larger than the rest, paint it with round up.

@1028mountain did you try triclopyr?

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1028mountain
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Re: Cool Season Weed ID Thread - What is it and how do I kill it?

Post by 1028mountain »

I haven’t tried anything other than tenacity as that’s all I put down. Whatever it is there is a lot. I’ll try triclopyr and see what it does.

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Re: Cool Season Weed ID Thread - What is it and how do I kill it?

Post by 1028mountain »

I am pretty sure its corn speedwell and it says triclopyr can treat it as @g-man mentioned. I guess it only thrives in the spring and pre-m in the fall is what stops it from germinating.

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Re: Cool Season Weed ID Thread - What is it and how do I kill it?

Post by lawninvestor »

Are these light green patches just massive tall fescue spots? The grass is very coarse and dense

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Deadlawn
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Re: Cool Season Weed ID Thread - What is it and how do I kill it?

Post by Deadlawn »

1028mountain wrote:
Thu May 13, 2021 9:49 am
I am pretty sure its corn speedwell......
Looking at the pic again, I think you're right. I have this which seems to come up in dry sandy areas where not much else grows.
Tier 1 - I just want something green. Perennial "weeds" that stay green year round are welcome.

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Re: Cool Season Weed ID Thread - What is it and how do I kill it?

Post by gstein »

Just found this site and this is my first post! Looking for any help in identifying what is in the attached pics. For the past three years I have only used Jonathan Green Ultra Black Beauty. I have some large pockets of this, whatever it is. It is a different shade of green and the base is brown or a purplish color. When it gets longer it seems to fall over on itself. I cut the lawn short this time around just to see.

Thanks in advance for the help!
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shadowlawnjutsu
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Re: Cool Season Weed ID Thread - What is it and how do I kill it?

Post by shadowlawnjutsu »

Anyone know what this is and how to kill it?
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ronan
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Re: Cool Season Weed ID Thread - What is it and how do I kill it?

Post by ronan »

Anyone help with IDing this - I originally thought it was Poa Triv, but now I'm not so sure. It has rolled vernation so I'm wondering if it is creeping bent grass?
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Togo
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Re: Cool Season Weed ID Thread - What is it and how do I kill it?

Post by Togo »

Triv?


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KW123
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Re: Cool Season Weed ID Thread - What is it and how do I kill it?

Post by KW123 »

What is this thick blade grass in my tall fescue lawn? It shows up in mid to late Spring, and grows faster than surrounding grass. This patch is by far the worst area, but it shows up sporadically in other areas.
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Jersey_diy
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Re: Cool Season Weed ID Thread - What is it and how do I kill it?

Post by Jersey_diy »

Togo wrote:
Mon May 17, 2021 5:32 pm
Triv?


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Looks like it, try to pull a piece out of the ground with the root intact...It looks like rather imature Triv...If you have tenacity that will help you identify it...Round up will be your only option, multiple rounds of it. Did you plant a shade mix of seed recently?

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Re: Cool Season Weed ID Thread - What is it and how do I kill it?

Post by Togo »

Jersey_diy wrote:
Mon May 17, 2021 7:49 pm
Looks like it, try to pull a piece out of the ground with the root intact...It looks like rather imature Triv...If you have tenacity that will help you identify it...Round up will be your only option, multiple rounds of it. Did you plant a shade mix of seed recently?
It’s been there since I got the house 6 years ago but it’s spread a good amount since then. Tenacity always lights it up but I figured I’d double check that it is in fact Triv before I did anything ‘drastic’. I’ve always just assumed it was Triv. Figured it might be worth it to get an early start on killing it off.

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Re: Cool Season Weed ID Thread - What is it and how do I kill it?

Post by Jersey_diy »

You might be too late killing it, could a couple weeks and it is likely to go into dormancy real soon. I am at the tail end of mutli low dose tenacity regime...not sure if it will work.

It really depends on what you have on hand... Round up, tenacity.....Anuew?

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Re: Cool Season Weed ID Thread - What is it and how do I kill it?

Post by peezyp »

I just noticed that my entire front lawn and parts of my backyard are covered with this type of grass… is this a weed? Or is it a tall fescue? (Is tall fescue a weed?)

If this is an undesirable… is roundup the only way to remove?
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Jersey_diy
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Re: Cool Season Weed ID Thread - What is it and how do I kill it?

Post by Jersey_diy »

peezyp wrote:
Tue May 18, 2021 9:25 am
I just noticed that my entire front lawn and parts of my backyard are covered with this type of grass… is this a weed? Or is it a tall fescue? (Is tall fescue a weed?)

If this is an undesirable… is roundup the only way to remove?
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I think it is a type of fescue, round up will be your option...apply 3rd week of august, re apply 4th week of august as needed... Seed at labor day(depending on weather and soil conditions)

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