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expired Posted by Hrshycro • Jul 20, 2022
expired Posted by Hrshycro • Jul 20, 2022

8-Oz Syngenta Tenacity Herbicide Concentrate (Clear)

+ Free Shipping

$53

$75

29% off
Amazon
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Deal Details
Amazon has 8-Oz Syngenta Tenacity Herbicide Concentrate (Clear, 46256) on sale for $50.35 -> now $52.87. Shipping is free.

Thanks to Community Member Hrshycro for finding this deal.

Key Features:
  • Eliminates weeds at seedlings so new grass can flourish.
  • Tenacity is the only residential-approved herbicide that selectively removes both nimblewill and bentgrass. Plus, it controls over 40 dicot and monocot species, including:Crabgrass, Clover, Goosegrass, Yellow Nutsedge, Windmillgrass, Ground Ivy, yellow foxtail, and oxalis. Tenacity herbicide provides unprecedented freedom to manage weeds, both broadleaves and grasses, without limiting other key aspects of turf management. With its proprietary active ingredient, mesotrione, Tenacity herbicide can be used both as a pre-emergence and post-emergence herbicide.

Editor's Notes

Written by SaltyOne | Staff
  • About this deal:
    • This 8-Oz Syngenta Tenacity Herbicide Concentrate is priced $24.65 lower (32.8% savings) than the $75 list price.
    • Refer to the forum thread for additional details and discussion.
  • About this product:
    • This has a 4.5 out of 5 star overall rating on Amazon based on over 5,000 reviews.
  • About this store:

Original Post

Written by Hrshycro
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
Amazon has 8-Oz Syngenta Tenacity Herbicide Concentrate (Clear, 46256) on sale for $50.35 -> now $52.87. Shipping is free.

Thanks to Community Member Hrshycro for finding this deal.

Key Features:
  • Eliminates weeds at seedlings so new grass can flourish.
  • Tenacity is the only residential-approved herbicide that selectively removes both nimblewill and bentgrass. Plus, it controls over 40 dicot and monocot species, including:Crabgrass, Clover, Goosegrass, Yellow Nutsedge, Windmillgrass, Ground Ivy, yellow foxtail, and oxalis. Tenacity herbicide provides unprecedented freedom to manage weeds, both broadleaves and grasses, without limiting other key aspects of turf management. With its proprietary active ingredient, mesotrione, Tenacity herbicide can be used both as a pre-emergence and post-emergence herbicide.

Editor's Notes

Written by SaltyOne | Staff
  • About this deal:
    • This 8-Oz Syngenta Tenacity Herbicide Concentrate is priced $24.65 lower (32.8% savings) than the $75 list price.
    • Refer to the forum thread for additional details and discussion.
  • About this product:
    • This has a 4.5 out of 5 star overall rating on Amazon based on over 5,000 reviews.
  • About this store:

Original Post

Written by Hrshycro

Community Voting

Deal Score
+68
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Visit Amazon

Price Intelligence

Model: Syngenta 46256 Tenacity 8oz Herbicide, Clear

Deal History 

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Top Comments

Tenacity has its specific uses(such as pre-emergent at seeding/overseeding, or bentgrass), but for the most part you're better off using herbicides tailored to the weeds you're targeting:

- For general broadleaf weeds 3-way 2,4D, mecoprop, dicamba
- For stubborn broadleaf weeds (chickweed, clover, wild violet, virginia buttonweed, creeping charlie) - triclopyr
- For crabgrass - quinclorac + methylated seed oil as surfactant
- For sedges - sulfentrazone

RoundUp for Lawns should target all of the above with a single mix. Combined with timely pre-emergent applications (early spring for crabgrass, late summer for Poa Annua if applicable), that should cover 99% of weed situations.
lawn god

195 Comments

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Jul 22, 2022
13 Posts
Joined Dec 2009
Jul 22, 2022
needmomoney
Jul 22, 2022
13 Posts
I went through all 12 pages of this thread and am more confused.

For a lawn care illiterate, is there a magical do-it-all product or cocktail mix that will do a decent job controlling the weeds(pre and post) in Illinois? Or am I better off continue paying $500 yearly for a "pro" service?
Jul 22, 2022
1,563 Posts
Joined Nov 2012
Jul 22, 2022
tomeaine
Jul 22, 2022
1,563 Posts
Quote from needmomoney :
I went through all 12 pages of this thread and am more confused.

For a lawn care illiterate, is there a magical do-it-all product or cocktail mix that will do a decent job controlling the weeds(pre and post) in Illinois? Or am I better off continue paying $500 yearly for a "pro" service?
Pre emerge fall is vital, promidine is good .you will always need to spot treat with post emerge..keeping up with it is the challenge

overseeing to ensure bare spots are filled to reduce weeds, healthy should blagh blagh blagh...never ending cycle
Jul 22, 2022
219 Posts
Joined Feb 2014
Jul 22, 2022
tu1820
Jul 22, 2022
219 Posts
Quote from Toe :
OK. I'd still suggest taking a look at a grassy weed ID [trugreen.com] page if you haven't already, because a lot of them can look similar.

If you're sure it's crabgrass, then by all means go for a product with quinclorac in it. I'd suggest researching your options a bit, though - just about any product that says it kills crabgrass will contain quinclorac. You can likely find concentrates that will be much cheaper in the long run.

https://www.domyown.com/ is a good place to research products, you can just search for 'quinclorac' or 'crabgrass' and find suitable products. Note the concentrations, like 2% vs 4% quinclorac. Find a few products that look promising, then hit up Amazon for a better price, lol.



That's why you add triclopyr [amazon.com] to the mix - it reduces the bleaching effect while increasing effectiveness. I use a tank mix of 1/2 tsp mesotrione, 2 tsp 60% triclopyr, and 1 T surfactant per gallon of water.

https://bioone.org/journals/weed-...0189.1.pdf [bioone.org]
Thanks so much for all your insights! That link with the different grass weed types is VERY helpful!
Jul 22, 2022
57 Posts
Joined Dec 2007
Jul 22, 2022
DrivenByNothing
Jul 22, 2022
57 Posts
Not sure if it's what caused it but I got non-hodgkin's lymphoma (the bad hodgkin's) at 34 after using this stuff. Wear protective equipment!
1
Jul 22, 2022
914 Posts
Joined Jul 2008
Jul 22, 2022
Toe
Jul 22, 2022
914 Posts
Quote from tu1820 :
Thanks so much for all your insights! That link with the different grass weed types is VERY helpful!
Yeah, that's why I said to make sure, because 'crabgrass' is so widely used for any grassy weed. A lot of people get disappointed when the crabgrass killer they bought doesn't work, when in reality they had like nutsedge or dallisgrass or something, which a typical crabgrass killer won't work on. It's often easier to identify if the weed has grown to the point that it's putting up seedheads. Though obviously you don't want those seeds being scattered around your yard!
Last edited by Toe July 22, 2022 at 11:35 AM.
Jul 22, 2022
268 Posts
Joined Oct 2018
Jul 22, 2022
FancyWren413
Jul 22, 2022
268 Posts
Quote from jessejamesplanb :
Can anyone comment on ways to irradicate poa annua in a cool season environment. In the past I have used pre-emergent but this year I need to overseed/patch seed.
Your best bet at this point is to get your grass seed started now which can be a pain in the hot summer. It will require multiple waterings to keep the seed moist. Come end of summer you should be able to put down a preemergent to keep the poa annua from germinating and coming up next spring. Poa annua is tough to eliminate and I would not count on getting rid of it in just one year.
Last edited by FancyWren413 July 22, 2022 at 12:41 PM.
Jul 22, 2022
119 Posts
Joined Feb 2007
Jul 22, 2022
n3ro
Jul 22, 2022
119 Posts
Liquid Harvest Mesotrione anyone tried it.

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Jul 22, 2022
32 Posts
Joined Oct 2012
Jul 22, 2022
techslix
Jul 22, 2022
32 Posts
Poison ivy that is creeping into grass and ornamental trees/plants?
Quote from j4c11 :
Tenacity has its specific uses(such as pre-emergent at seeding/overseeding, or bentgrass), but for the most part you're better off using herbicides tailored to the weeds you're targeting:

- For general broadleaf weeds 3-way 2,4D, mecoprop, dicamba
- For stubborn broadleaf weeds (chickweed, clover, wild violet, virginia buttonweed, creeping charlie) - triclopyr
- For crabgrass - quinclorac + methylated seed oil as surfactant
- For sedges - sulfentrazone

RoundUp for Lawns should target all of the above with a single mix. Combined with timely pre-emergent applications (early spring for crabgrass, late summer for Poa Annua if applicable), that should cover 99% of weed situations.
Jul 22, 2022
671 Posts
Joined Jan 2013
Jul 22, 2022
j4c11
Jul 22, 2022
671 Posts
Quote from techslix :
Poison ivy that is creeping into grass and ornamental trees/plants?
Use a small paintbrush to brush straight undiluted triclopyr onto the poison ivy leaves only. No, that's not a joke.
Jul 22, 2022
821 Posts
Joined Jan 2017
Jul 22, 2022
randompurplehippo
Jul 22, 2022
821 Posts
Quote from needmomoney :
I went through all 12 pages of this thread and am more confused.

For a lawn care illiterate, is there a magical do-it-all product or cocktail mix that will do a decent job controlling the weeds(pre and post) in Illinois? Or am I better off continue paying $500 yearly for a "pro" service?
In my view, you're better off following Scott's 4 step program but it's late to start in the year for weed control. You can still start, go through fall step 4. Overseed. Not sure where you're located but in cold winters, weeds should die. Then next spring start with Scott's Step 1. I did this religiously this year and have had very few weeds. Using tenacity for spot treatment, and watering my lawn regularly.
Jul 23, 2022
519 Posts
Joined Nov 2007
Jul 23, 2022
jad2020
Jul 23, 2022
519 Posts
Quote from daddydeals :
Was it spade shaped leaf? I got some beastly ivy coming in from the neighbors that grows like wildfire.
In my research before ripping out tons of it by hand I concluded there is no effective chemical control for ivy. Anyone know different let me know please. Hardest job ever.

I found threads online for both ivy and bamboo saying "I planned it many years ago because I thought it'd look good and now I'd like to get rid of it." The comments haha!

Anyone have any tips for ivy or bamboo?
Jul 23, 2022
1,997 Posts
Joined Nov 2010
Jul 23, 2022
leovip
Jul 23, 2022
1,997 Posts
Quote from jmhulet :
Just until it dries to be safe. Mestrione is actually a very safe substance that was originally derived from a plant. Someone discovered that no other plants were growing around this specific plant and figured out that it was because the plant contained the substance later identified as Mesotrione. Hard for the tree huggers to complain about this "chemical" lol.
Lol just because it comes from a plant doesn't make it safe. It's all about concentration. Case in point cyanide can be found in most fruit seeds like Apples and whatnot. You eat apples and are fine so taking a cyanide pill means you'll be fine right given it comes from the fruits you eat every day....
Jul 23, 2022
519 Posts
Joined Nov 2007
Jul 23, 2022
jad2020
Jul 23, 2022
519 Posts
Quote from thedesi :
May be an off topic question. What are good online places to buy seeds. Looking for cultivars for shade areas (3hrs sun) in NJ
Preferredseed.com comes in a canvas bag packed with a sharpy sent I think FedEx. Smells great and is super fresh. I have great success buying many times. Huge germination rates great choices of seed...
Jul 23, 2022
519 Posts
Joined Nov 2007
Jul 23, 2022
jad2020
Jul 23, 2022
519 Posts
Quote from Toe :
Is this actual crabgrass, or is it possibly some other grassy weed? If it's crabgrass, look for something with quinclorac, which you can find cheaper than this. This stuff does work well for a lot of other grassy weeds, though (and see my earlier post about mixing with triclopyr).



On the other hand, it's good for getting rid of Bermuda grass that's crept into your cool season lawn.



Don't have any seller suggestions, but the best grass to use for shaded areas of a cool season lawn is a fine fescue. Creeping red, sheep, hard, or chewings fescue - basically any fescue that you see that's not tall fescue. IIRC creeping red is the most shade tolerant of those.
Warning: your creeping red fescue that's "drought tolerant" may not be heat tolerant.

I had beautiful grass in the shade that almost 100% got roasted even with proper watering.

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Jul 23, 2022
914 Posts
Joined Jul 2008
Jul 23, 2022
Toe
Jul 23, 2022
914 Posts
Quote from jessejamesplanb :
Can anyone comment on ways to irradicate poa annua in a cool season environment. In the past I have used pre-emergent but this year I need to overseed/patch seed.
Use Scotts Triple Action Built for Seeding [scotts.com] around late August, then seed around Labor Day or so. That's a starter fertilizer that also contains mesotrione, ie the same stuff that's in the bottle in the OP. It's effective as a pre-emergent against poa, and won't hurt your grass seeds. (As an aside, there's also been some talk about triclopyr in this thread. Triclopyr should NOT be used when you're seeding.)
Last edited by Toe July 22, 2022 at 09:28 PM.

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