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  • Fiesta Weed Killer
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Fiesta Weed Killer

4.0 out of 5 stars 1,066 ratings
#1 Best Seller in Weed Killers
$116.00 with 8 percent savings
Was: $126.00
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Chapin 20000 1 Gallon/3.8 Liters Lawn and Garden Pump Pressured Sprayer, for Spraying Plants, Garden Watering, Weeds and Pest
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Hi-Yield 32005 Spreader Sticker, 8oz
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Technical Details

Manufacturer reference ‎30550
Parcel Dimensions ‎28.8 x 18.2 x 11.3 cm; 5.7 kg
ASIN ‎B0851QQ398

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Product details

  • Parcel Dimensions ‏ : ‎ 28.8 x 18.2 x 11.3 cm; 5.7 kg
  • Date First Available ‏ : ‎ Jan. 28 2021
  • ASIN ‏ : ‎ B0851QQ398
  • Manufacturer reference ‏ : ‎ 30550
  • 鶹 Rank: #85 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)
  • Customer Reviews:
    4.0 out of 5 stars 1,066 ratings
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4 out of 5 stars
1,066 global ratings

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First Timer and Started Noticing Result After 24Hrs
5 out of 5 stars
First Timer and Started Noticing Result After 24Hrs
First time using a herbicide and after 24hrs I started noticing dark spots (dead weeds). I’m very happy. If you are not sure the proper mixing amount just enter into ChatGPT and it calculates for you how much to use, as that’s what I did for my 1gal pressure sprayer. I’ll waiting for another 2 weeks to see the result and re-spray again. I’ll add a surfactant next time as the water kept beading off the weed with broad leaves. I had to do something as these weeds is killing my beautiful lawn.
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Top reviews from Canada

  • Matt
    5.0 out of 5 stars Kills the weeds, not your kids.
    Reviewed in Canada on July 1, 2025
    Verified Purchase
    Okay. This actually works. Won’t make your dog and kid’s teeth turn green and their hair fall out. 48 hours - dandelions are black and wither away. Two treatments needed to affected area. 10/10 would recommend.
    4 people found this helpful
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  • Beth-Lynn
    4.0 out of 5 stars Patience and it lasts
    Reviewed in Canada on May 27, 2025
    Verified Purchase
    We purchased this knowing that lawn care companies in Canada use it, and knowing that dicamba and tryplocor are unavailable here and would work faster and better. This is straight up iron. It’s a deep red rust colour and you will see your lawn darken for a few days (but not brown) after using it. You need a 2-gallon sprayer on fan mode. There are websites that give a ratio of water to product better than the bottle does so you know what strength to use for best effectiveness for your efforts. It goes a long way and lasts several applications. It’s a lot in a jug so lasts a while. Be patient. Yes dandelions will brown. So will clover. Well established clover will take several spaced apart applications. Creeping Charley is a no, it won’t touch it. It’s broadleaf only. Remember lawn companies often just spot treat. They don’t do a full service after maybe one time. This for the money gives you control so you can do it yourself as much as you think needs doing with no harm to the grass. Way better than the hundreds lawn services charge for the same product.
    8 people found this helpful
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  • John
    5.0 out of 5 stars Working Well
    Reviewed in Canada on June 19, 2025
    Verified Purchase
    Working great for me. It hasn't completely wiped out the clover, but a large majority of it has browned up very well. I'm fully expecting to have to do multiple applications over the next year or two to completely kill it, but that's just the reality of non-banned herbicide these days. These iron-based chemicals don't do a great job of traveling down to well established roots to kill the entire plant like the old ones do.

    This is working better than anything else I've used in recent years. I'll happily continue to use this.
    3 people found this helpful
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  • Jeff
    5.0 out of 5 stars It works well on clover and plantain
    Reviewed in Canada on September 5, 2024
    Verified Purchase
    Tried to use Wed B Gone to kill plantain. It only blackened the leaves but the weed came back to life within two weeks. Fiesta killed the plantain and large patches of clover that were on my lawn. At first it looked like nothing happens. The next day the weeds were not shiny green. By the third day, the weeds were visibly dying. Beware that the herbicide stains the weeds and your lawn will look brown in the areas that you sprayed for 7-10 days. It will disappear as the grass grows and rain falls on it. I would recommend this herbicide.
    7 people found this helpful
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  • Michael
    3.0 out of 5 stars 50% efficiency
    Reviewed in Canada on July 3, 2025
    Verified Purchase
    It’s working somehow but only killed half of weeds in my lawn. Killed dandelion and some wider leaves weeds. Not working for a Lot of other weeds such creepy buttercup, cranesbill and the tiny daisy with white flowers. They are still blossoming very well and outstanding after others were killed. The efficiency can be 50%. I sprayed once early summer and believe have to do it multiple times through the year.
    Customer image
    Michael
    3.0 out of 5 stars
    50% efficiency

    Reviewed in Canada on July 3, 2025
    It’s working somehow but only killed half of weeds in my lawn. Killed dandelion and some wider leaves weeds. Not working for a Lot of other weeds such creepy buttercup, cranesbill and the tiny daisy with white flowers. They are still blossoming very well and outstanding after others were killed. The efficiency can be 50%. I sprayed once early summer and believe have to do it multiple times through the year.
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    One person found this helpful
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  • Raj
    5.0 out of 5 stars Excellent post-emergent
    Reviewed in Canada on July 4, 2025
    Verified Purchase
    Fiesta worked amazingly well on the broad leaf weeds (in fact all the weeds, I must say). I don’t see any weeds but I am pretty sure they will pop up eventually. But Fiesta better than I expected. Follow the instructions to the closest possible - dilution, weather, etc. I bet it will work if you did that.
    3 people found this helpful
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  • Raymond Miller
    2.0 out of 5 stars Please read this review before you order
    Reviewed in Canada on June 15, 2020
    Verified Purchase
    If weeds aren't in the rapid growth stage of life the leaves cant absorb the Iron. Must be younger weed & a few hot days signal weeds to slow growth to conserve energy. So mostly just for spring and fall with younger weeds. Even with much stronger mixes it won't work when on slower growing weeds. Adding quick release nitrogen to the mix help stimulate growth/absorbtion a little. After 2 years of different attempts, Fiesta's useful when diluted to 8mls for each litre of water and sprayed on the lawn, Fiestas ingredient chelated iron will make the grass a beautiful dark green. The dark green lasts about 10-14 days. Iron is the same ingredient that most "green your lawn" type products use. But those products contain far lower concentrations of Iron. At higher levels like im Fiesta the plant can absorb so much iron to overdose making it so green it looks black, so we must dilute Fiesta drastically if we use it for that nice dark green. Your grass type might respond better if diluted more or less than 8mls/litre but Fiesta won't harm your lawn even using Fiestas directions on the label for weed killing, which is 42mls per litre of water. Between 5-10mls per litre works fine and at least this stretches a bottle of Fiesta further becaus it is not cheap.
    Finally for weeds, it never kills the weed and dandelions are the best chance it can work with, but it will never kill the tap root on the dandelion, so it will grow back.
    For weeds i recently ordered Killex from 鶹.ca and it works, actually killing dandIlion roots and doesn't kill the lawn.
    62 people found this helpful
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  • Robert D.
    4.0 out of 5 stars Updated to earlier review: Ummm. Yes. This works 100% on broadleaf weeds
    Reviewed in Canada on April 30, 2023
    Verified Purchase
    100% this works on broadleaf weeds. Dandelions as the best example. All - I mean all - weeds that were sprayed (mix approximately 1 Cup (250 ml) of product to 6 litres of water + AG 12102 Sticker Spreader) and I have the best weed control of broadleaf weeds I've seen.

    All weeds are dead black within a few days and now after two days of rain, they have essentially rotted away from the landscape. To put this into perspective, I must have sprayed 300-500 places in my lawn and they are all gone. Nothing I've ever used has been this effective.

    I think the AG Sticker Spreader is the key to the process.
    In any case this combo, in my case was 100% effective. 100%.

    I simply used a $25 pump-pressure sprayer purchased at another retailer to apply it to the areas of concern.

    Totally. Totally satisfied with this product, which makes approximately 100 liters of effective weed control that you can reapply to spots you've missed as these damn weeds will pop up when you don't see them when they are small.

    This Fiesta Weed Killer does not work on weed grasses.
    This is broadleaf weed product as specified by the producer.

    note: If you want to kill grass in cracks, grassy weeds, moss, (anything really) I would suggest people look at the "other" products that Nuedorff makes. Just look online and find it here on 鶹, like I did.
    41 people found this helpful
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