KILL IT NOW! Crabgrass, Dallisgrass, Nutsedge, Poa, Treatment Options
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- Опубліковано 8 лют 2025
- Covering off some of the challenging weedy grasses and sedge today:
Crabgrass, Dallisgrass, Nutsedge, Poa. Weed ID is important and getting the right control, doubly so.
2:40 First and foremost there is a wonderful database to use for identifying all weeds, but for this exercise, it's about grasses and sedge.
weedid.cals.vt...
4:30 gets into ID.
Nutsedge is not a grass, it is it's own class that is often confused with grasses. Dallisgrass and Crabgrass are often confused with each other and require different treatments to control. This will help give you the Best Crabgrass and Grassy Weed control options
10:58
Rod Marquardt joins me today to talk control options for crabgrass, dallisgrass, poa, and sedges as well as more info on Anuew from NuFarm.
Other products mentioned are Quincept, Q-ball, Prodiamine, MSMA, Dicamba, Manuscript (by syngenta) to name a few.
A few things to note, here is a link to the history of crabgrass and it's worth a read.
www.gardenguid...
If it isn't Late May or June or really hot for a while, it probably isn't crabgrass and you are dealing with something else unless you live in the extreme southern US. Warm soil and air temps are needed as well as a space for the grass to thrive.
Killing crabgrass is typically a multi-app or a higher labelled app rate and those must be followed. Repairing the area with a patch filler like TurfMend is a great option to get grass growing and covering the area.
This will help give you the Best Crabgrass and Grassy Weed control options.
Link to Quinclorac : amzn.to/2XyzL7v
Link To Generic Mesotrione (Tenacity) yardmastery.co...
Link to Dimension (dythiopir) amzn.to/3epSfya
Link to Celsius herbicide : yardmastery.co...
paul outlaw has a video on this as well: • How To Control Poa Wit...
Just got the chance to watch this... been super busy... Canada Rod is the man .... thanks for the shout out JP!!!!
You bet brother!!!
Good information John Perry. Your knowledge is very much appreciated!
Thank you david
Disappointed that I missed the premiere. Excellent video! Quackgrass has turned its head to my lawn, fortunately I haven’t had too many weeds, some clover, but much better than years past. I personally liked something that Lawncreeps said, if your weeds are at such a minimal level that you can hand pull, or they aren’t noticeable to other people, don’t put the chemicals in the soil. Save them for when you really need them.
Regular mowing and occasional pulling can do wonders for lowering weed propagation.
That pesky quack grass! It’s killing me this year!
First Aussie 😁. Missed another live, 😴 , I’ll watch it now. 😎👍👍. That was a great session, impressed again , you’re on a roll John. 😎
Thank you Trevor!!!
Missed the live, but the reruns are always great!
Better late than never buddy!
I realize I'm late to this thread but better late then never?! Thanks again!
I spray daliss grass with glyphosate, it's usually so easy to drip down the big leaves. If I see it small, I pull it. I like to walk the yard before a mow, pull weeds then mulch them into the yard.
Another way to know the difference between dallis grass and crab grass is to compare the seed stalks. Dallis grass will have 2 3 or 4 thick stalks that grow horizontal where crabgrass will have 4 or 5 tiny stalks that fan out and face the sun.
Loved the video. Appreciate the help. Look forward to seeing some more. Really interested in pre- emergent timing In the Southeastern US zones. Also, some recommendations if possible. I just moved here and have 3 acres that’s full of weeds. Been working it like crazy and the Bermuda is spreading, but it’s taking forever. Still have a lot of weeds and the battle seems never ending. By the way, I went to VA Tech and I didn’t even know about that site. I’ll go to it regularly. Thanks
Another thing to consider with herbicides is the temperature; some herbicides will damage desirable grass when used at temperatures above the maximum recommended temperature.
At this time of year, I am seeing dallis grass and crab grass. When I use a weeding tool to remove them, I find that I am hitting fist sized rocks and bricks that were not removed by the landscaper that the home builder used. So digging up more than just the weeds becomes necessary. And don’t let those weeds produce seed, even if you have to just pull the seed blades off rather than dig up the entire weed; that seed will come back to haunt you in the future, after the parent weed is gone.
I'm South of Houston and I've had giant full crabgrass/dallisgrass since February. In the same spots every year.
It happens. You have st Augustine?
@@Lawncology Yes, 19,00SF of an acre and a half is St Augustine on a 3 year old new home build that I have to cut with a push mower twice a week, and treat a couple times a month in the Houston area humidity. Also once a month applying the N-Ext products. Fungus loves the morning dew, rain, heat and humidity here, so I'm always chasing that as well. I've spent over $1800 so far on fungus control with Heritage G, and last week, the Scott's/Bioadvanced combo I put down the second app to continually chase dissapearing patches with the 11/3 fungicide double shot and it's only May! I've been using your products since their inception and I love them. They work great, when my grass and clay soil decides to play along that is. Let's just say that spraying all that with a hose definitely provides a workout. I wish I could use my back pack sprayers instead and get the same dilution rate with water to make it easier. But finding the right tip for your products has been a chore. There's one back corner that I get about 15 spots of giant crabgrass/dallisgrass the size of a basketball by February every year. So last week I hit them with a dose of Pennant Magnum and blindside and zapped em good. They have shown some fresh stragglers along the outside since, so I need to keep on them. It's basically my second full time job working on this yard like Mr. "Throw er down!" does for a living, but I love the outdoors and the workout. My wife came down with breast cancer in March, so with having to help her a lot more to get through it, I'm trying to slip the yard treatment in when I can now. I just love being outside and doing yard work, and following you and the the "gang" religiously for over 3 years now, and wish I could do more! Keep doing the great work with everything you do for us DIY'ers! Sorry for the novel!
I renovated my lawn two years ago and it’s been doing great but at the beginning of summer I started getting Dallas’s grass now it’s all over the place and I can’t find a solution for it
St Aug w/ dallisgrass in north tx: I had tons of dallisgrass last year. One celcius liquid treatment September 1, follow up treatment october 1, knocked it out. Didnt add revolver because of price. Celcius worked great.
Dang it J.P.! I was so proud pf the Corona Beard and then you go and do this! I won't cancel my sub yet, but man, you gotta grow that thing out!
Lol. I’m going to let it go again. Maybe all the way to GIE!
What was the song in the beginning post intro??
ANUEW WORKS AWESOME! However on a side note John, I mixed some fungicide and DeThatch together with some O2YS and the O2YS requires the Ph below 5.0, I used Citric Acid to drop the Ph. Now my question is will the Citric acid stop the yeast and molasses in the Dethatch? I had some Redthread pop up and I'm trying to grow it out before the heat hits here in VA.
It will be just fine. No problem at all
@@Lawncology thanks John! I was hearing the sizzle in the tank mix and thought about it for a minute, so I had to ask the question. Still loving my N-Ext!
I had to go way above label rate with Bendaknees and OneGlove last season in order to finally get my Dallisgrass problem under control. :(
I hear ya. I’m always above max on those
Target 6 works very good on dallisgrass in warm season grass
100%agreed with everything 😎👍💪
Thank you
Love these videos! Would love to see more on grassy weed control, like annual rye, barley, wheat etc. the list could go on! I’ve got one that seems no one can help with so far. Could I email some pictures?
Send them over. Answers@lawncology.com
Lawncology you the best, man!
Lawncology pics heading your way! Thank you!
John I want to thank you for all the info you put out, with that said you put out a video that had a sick blue spruce and you felt very strong about not cutting it down, but instead to feed it, I would have to say I am very interested to know what happen to the tree? sincerely Rob.
Great info. Thanks, John!
The Lawn Guardian thank you buddy!!
totally missed Tiny yeti. Great Info. Thanks again!
Two years ago crabgrass went nuts here in Nebraska. Last year it was volunteer trees. This year Poa Annua is OFF THE CHARTS!!! What's it going to be next year???
Hmmmm.... let’s send you some wild violets!!
Love living in VA and being able to send my soil sample to VA TECH!
Nice!
Yep...me too. ~ mike in VA
What is the weed shown at the 1:33 time stamp? Thanks
I'm getting ready to being in a bunch of top soil for my front yard. Will I need to kill off the dallisgrass and the rest of the grass beforehand? Alot of areas are gonna be at least 2"+ deep with topsoil
Awesome video. Now it's time to watch the NASA launch.
POA Annua was bad this year in South East this year
A lot of people dealing with it for sure
Very true. It almost took over my back yard! I’m very disappointed.
I have a question, I've heard of this Anuew product and I have a small crop of Poa Annua in my front yard, I would like to know if Anuew is applied will that help reduce the Poa enough to where the TTTF/ Bluegrass is permitted to take over? Thank you!!!
Best product to kill purple Nutsedge?
Halosulfuron: Sedgehammer or Halo
Halosulfuron is a good option (ProSedge is Nufarm's) but I would recommend Celero as my favorite option. Certainty in warm season turf is going to be very strong.
What about Dallis grass? In fescue seems Pylex was the only option but you need to take out a small loan to purchase it. Some mention Tenacity but the jury's out. You mentioned Manuscript and Certainty (teed?) but can you use in Fescue?
Yes on certainty but it’s suppression similar to tenacity. Multiple follow ups.
My old line was... weeds don't cause a poor lawn, they are the result of one.
Love that!
Va Tech! Go Hokies! Sorry guys, I just love my school. If I'm not mistaken, they still will do soil analysis for private property owners.
Yes theyndo
John this is my first year I’ve put down prodiamine last fall and I put some down March 1st. I’m seeing some crabgrass popping up. Very disappointed as I followed the label. Would you say I applied too late, or miscalculation/mistake? Or the ground just used it up from more rain?Middle Tennessee here. Thanks
It’s not failsafe, timing and water are the two biggest factors
Don’t feel bad. I put some down the last week of January, and my lawn is in rough shape. I’m convinced that mine has outlived it’s shelf life.
ZeroTurn yeah that’s what I’m thinking too. We’ve had a ton of rain
Looking forward
I’m trying to eliminate the St. Augustine grass from my yard without killing the existing Bermuda and Fescue. If it was just Bermuda I could glyphosate the grass after the freeze makes the Bermuda go dormant. Being in north Texas the fescue doesn’t go dormant so glyphosate is out. Any ideas? I’m purposefully mowing at 1” to 1 1/2” to discourage the St. Augustine’s growth. I’m also using pre-emergents not recommended for St. Augustine lawns. The smaller sections of my lawn I just manually eliminated it and reseeded. I just don’t want to start from scratch on a 5,000 sq. ft.
If you are going after removing only the St. Augustine grass look at using Q-Ball (Quinclorac). If you have other broadleaf weeds use Quincept. My next choice would be 4-Speed XT. Other herbicides that will be harsh on the St. Augustine grass include Escalade, Horse Power, Cool Power, and Triplet (low cost!). All of these are labeled for use in bermuda lawns.
Pylex is a good herbicide for Dallisgrass.
Thanks man!
Thank you!
Did I miss the Nutsedge section?
Honestly it may have been edited because of time except where it was pointed out. Halosulfuron (sedgehammer)
For warm season turf Certainty works well. Be patient as it can take a week or more before seeing it turning brown.
Have you ever found any solutions for Quackgrass in Cool Season grass other than Glyphosate?
Not really. I have a guy mowing short and cooking it out, he’s been documenting it. Thought it was close to 50% knocked back after about 4 weeks
@@Lawncology ok. I think its Quackgrass that I have but I'm not 100% sure. The VT site doesnt have photos but very good descriptions
This is a great vid! :-) Thank you!
What’s the deal with MSMA? Pretty sure you can buy it in Mississippi.
You can buy it, but it’s not labeled for residential use. Who watches to see what your spaying on your lawn anyway?
Not for residential. Many many products fall into that category
Msma IS available, its labeled as Target 6.
I believe it is off turf label.
What Golf Course did you get to visit in South Texas?
A couple. Golf club of Texas San Antonio and concan
Cheatgrass! That’s probably what I have popping up a lot around here lately in SE WI! That looks kind of similar to quack grass just a lighter color. I have quack popping up all over again after I nuked it last year. Idk what else to do with the stuff other than trying to mow it out. Hopefully the kbg will push it out. The lawn is looking healthier than ever this year which is great. Trying to make my soil right 💪. But man, quack grass is the frickin worst.
Yeah man. Quackgrass blows.
What about bentgrass? Its invading my cool season lawn and a pain
I believe tenacity is labeled for bentgrass control
Sure Power is very harsh on bent grass. Kill all your broadleaf weeds (including wild violets and ground ivy), yellow nutsedge, small crabgrass, and hit bent all in one go.
Damn missed the tiny yeti and the live! Why? Cause I was in the damn yard because when I got up I watched a video that made me wanna go out there!
Lol
What is the link to the PGR?
Right now only cases are available.
www.domyown.com/anuew-plant-growth-regulator-p-23007.html?sub_id=23008
Does the PGR help with Poa Triv as well or just Poa An?
Yes, slows it way down.
Does Anuew work on Poa Triv or Poa Annua?
Apparently both. Suppresses them.
Toward the end, Rod mentioned something that would help suppress QUACKGRASS. Can you provide that name for me.
Certainty. Don't use in fescue or rye. It's used to kill both fescue or rye. Primarily a warm season turf product. Used to be labeled in KBG. Also used in beds for over the top weed control.
@@rodmarquardt5099 thanks
Where was Tiny Yeti? reflection in sunglasses at ~1:50
Yes!
So my heart just dropped at 11:33! I have st. Aug :(!
Lol. There are ways to get there. There are product options.
I'm good my bacj is killing me from pulling it out. I "painted it black" coming back already!
PASPALUM DILIATATUM!!!!!! Flash back from Dr. Goately's weed identification class my sophmore year of college!!!!! Walking around campus and stopping every 5 minutes or so, what is this, pre emergent and post emergent recomendations, and spelling of latin name counted. Litterally the only C I made while majoring in Sports Turf Management at Mississippi State University but by far the most retention of information I have. Most difficult part is I am color blind so some very tiny details of a few similar weeds were dificult for me to identify and why I have assistant superintendents today, that and the latin spelling is what always screwed me on the exams. Dr. Goately is now at University of Kentucky.
That’s awesome. Yeah, when people see Latin names they realize relationships to improved turf varieties. I think it’s good for people to know.
@@Lawncology Fast forward a couple of decades I was the grow in superindendent and then remained superintendent at the first golf course in the world that was tee to green paspalum grass (we used seashore paspalum) and that was also irrigated with a combo of about 30% potable fresh water (no ground water on the site and we had to tap into the develpment's water delivery pipeline for residental, commercial, and resorts) 30% salt water and 40% gray water (all recovered and processed waste water was pumped into various irrigaiton systems of the comon green areas of the development, resort grounds, and pumped into ponds on the golf course. All ponds were plastic lined and underwater agitators along with fountains keep the three waters mixed as they are diferent densities. Was an awesome experiment..... I can promise you this.... There is no way in this lifetime that Connor Ward or Ryan Knorr can get even close to the stripes we had on that golf course! Not even 1% close!
Totally missed Tiny Yeti! But c’mon lucky 7!
Look forward to the video, I won’t be able to see it live gotta work. The tiny yeti will be in the grass!
Sorry I missed it, but Yeti! 🤪
Tiny Yeti on the trampoline!
Send me an email with your address! Lucky number 7!
John just sent to you on the web site. Thanks
Lawncology I sent another message on the web site I forgot to include my address on the first one😳
Yeti in the sunglasses
The subtle reflection of yetis in the mist 😁
1st Zman ha
TINY YETI
Tiny Yeti!
Tiny Yeti
tiny yeti
Tiny yeti!
Tiny yeti
2 minute intro , man
Dude… you need like 10x more images and 90% less talking…
Tiny Yeti
Tiny yeti
Tiny Yeti
Tiny yeti
Tiny yeti