--- product_id: 193792935 title: "ALLIGARE Flumigard Herbicide - Fast-Acting Flumioxazin Weed Killer for Rapid Control of Aquatic Algae and Terrestrial Weeds in Forestry, Aquatic, and Bare-Ground Sites - Granules -1lb" brand: "alligare" price: "38.62 OMR" currency: OMR in_stock: true reviews_count: 8 category: "Alligare" url: https://www.desertcart.com.om/products/193792935-alligare-flumigard-herbicide-fast-acting-flumioxazin-weed-killer-for-rapid store_origin: OM region: Oman --- # ALLIGARE Flumigard Herbicide - Fast-Acting Flumioxazin Weed Killer for Rapid Control of Aquatic Algae and Terrestrial Weeds in Forestry, Aquatic, and Bare-Ground Sites - Granules -1lb **Brand:** alligare **Price:** 38.62 OMR **Availability:** ✅ In Stock ## Quick Answers - **What is this?** ALLIGARE Flumigard Herbicide - Fast-Acting Flumioxazin Weed Killer for Rapid Control of Aquatic Algae and Terrestrial Weeds in Forestry, Aquatic, and Bare-Ground Sites - Granules -1lb by alligare - **How much does it cost?** 38.62 OMR with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/193792935-alligare-flumigard-herbicide-fast-acting-flumioxazin-weed-killer-for-rapid) ## Best For - alligare enthusiasts ## Why This Product - Trusted alligare brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description desertcart.com : ALLIGARE Flumigard Herbicide - Fast-Acting Flumioxazin Weed Killer for Rapid Control of Aquatic Algae and Terrestrial Weeds in Forestry, Aquatic, and Bare-Ground Sites - Granules -1lb : Patio, Lawn & Garden Review: This product worked for me. - We have a 20 year old 1/4 acre oval shaped pond located in southern Louisiana. The pond has several types of panfish, catfish, frogs, and turtles, as well as gets visited by plenty of wildlife. When we fist dug the pond I made the mistake of using duckweed to help clear the clay from the water. The duckweed worked and the water cleared up quickly. I then used diquat herbicide to kill the duckweed. This worked but we have never been able to completely kill off the duckweed. Over the twenty years, we have probably gone through several gallons of diquat to control the duckweed, along with blue dye to control the submerged weeds, but recently we had lost a lot of the ponds shade trees as a result of Hurricane IDA. The pond now gets sunlight all day which has made the duckweed uncontrollable and also increased the amount of what looks like Filamentous algae. The algae was forming submerged mats which the diquat had no effect on. After much internet research and out of desperation, we figured we had to try something else, but had to make sure it would not kill the fish or wildlife. We ordered the Flumigard Herbicide. According to the directions, we estimated we would need to use 1/2 of the container (powder) mixed with water in a 1 1/2 gallon hand sprayer. We also added 3 ounces diquat and a few ounces of 80% herbicide surfactant. We sprayed the pond as evenly as possible in May with 75 to 85 degree weather. We also added the normal 8 ounces of blue dye that we routinely add to the pond. Results were slow but after one week all of the duckweed was gone and the mats of algae were staring to show signs of reduction and breaking up. It has to be noted that May 2023 was a dry month in Louisiana. Dry like drought stage. So the pond was not getting any rain water. After two weeks, the mats were gone and we were able to remove some of the remaining clumps with a net. At three weeks the pond was really looking the best it had in a long time, but then we had five inches of rain. The pond turned green with all of the new rain water. You have to be careful with this product as the instructions said to not add any additional product for a minimum of 28 days. Instead of adding any herbicides, we added an additional 8 ounces of blue dye. POND LOOKS AWESOME. We are saving the other half of the container and am monitoring the algae growth. If it starts to show an increase, we will try the less expensive option of diquat with surfactant. As we added both herbicides at the same time, it is hard to say what actually did the trick other than the combination described above worked for us. Highly recommend. 07/10/23 UPDATE: Well its been about six weeks since out initial application describe above. It has been HOT, HOT, HOT with a couple downpours over the last few weeks. Pond was looking great until a couple days ago. We have a new growth on the surface which looks like pond scum or some kind of surface algae bloom. NO DUCKWEED and NO SUBMERGED weeds though. I used the other half of the Flumigard, 2 0z. 80% Surfactant, and 2 oz. Diquat in our 1 1/2 gallon hand sprayer. As soon as the herbicide it the surface, the scum changed from a bright green to a dark green and starting breaking up. Hopefully this does the trick and does not kill the fish. I am happy to see that the duckweed has not returned. It has been scorching hot (90 to 100 degrees) everyday with full sun beating on the pond. I have not checked the water temperature lately, but I would think it has to be in the mid to upper 80s. With all that said, I would say the product is doing what it is supposed to do, which is controlling the weeds. Review: One of the best one stop weed killing solutions I have found. - This stuff is great. It kills weeds and grasses that want to grow on the court. If I add a bottle of Dawn detergent, or another surfactant it works wonders removing duckweed, watermeal, and other floating lake weeds. It has completely cleared our 2 acre cypress sink of duckweed, and watermeal, and it is now shown as a waterbody on google maps/earth. It has removed most of the duckweed and a lot of floating grasses from the lake so that my boat ramp and channel are now open and connected to the rest of the channels in Lake Iamonia which is huge. It makes the property more beautiful, more open to fish and wildlife, makes the property more valuable, allows for oxygen and sunlight to reach into the water. And allows me to boat around and enjoy life. It is the best for the price. Thank you Flumigard! ## Features - FAST-ACTING ALGAE CONTROL: Flumigard pre emergent weed control delivers rapid knockdown of filamentous algae and young terrestrial weeds, providing quick, visible results. Perfect for copper-sensitive aquatic areas and tough terrestrial weed challenges alike - BROAD-SPECTRUM WEED DEFENSE: These weed killer granules work on young weeds both before and after they emerge, ensuring effective control in aquatic, forestry, and bare-ground environments for comprehensive weed management - VERSATILE APPLICATION OPTIONS: Designed for both surface & subsurface treatments, our preemergent weed prevention for ponds offers flexibility in application methods. Use it in lakes, ponds, canals, forestry sites, or around woody ornamentals to tackle diverse problems - OPTIMIZED FOR IDEAL CONDITIONS: Apply this pre emergent herbicide when weeds are young and healthy, during sunny conditions above 65°F. Moisture activates the herbicide in soil, providing residual control that extends protection beyond initial treatment - EASY TANK-MIX COMPATIBILITY: Flumigard aquatic weed killer pairs well with systemic herbicides like glyphosate to boost post-emergent control. Follow mixing guidelines (e.g, 6 to 12 oz per surface acre) to maintain spray stability and maximize herbicide performance ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07S4DR2RB | | Active Ingredients | Flumioxazin | | Best Sellers Rank | #45,280 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #303 in Weed Killers | | Brand Name | ALLIGARE | | Coverage | Non-selective broad spectrum coverage | | Customer Reviews | 4.5 4.5 out of 5 stars (167) | | Item Form | Granule | | Item Weight | 16 ounces | | Liquid Volume | 1 Gallons | | Manufacturer | ALLIGARE | | Part Number | 14161 | | UPC | 192702141522 | | Unit Count | 16 Ounce | ## Product Details - **Active Ingredients:** Flumioxazin - **Brand:** ALLIGARE - **Item Form:** Granule - **Item Weight:** 16 ounces - **Liquid Volume:** 1 Gallons ## Images ![ALLIGARE Flumigard Herbicide - Fast-Acting Flumioxazin Weed Killer for Rapid Control of Aquatic Algae and Terrestrial Weeds in Forestry, Aquatic, and Bare-Ground Sites - Granules -1lb - Image 1](https://m.media-amazon.com/images/I/71Vd2gUBauL.jpg) ![ALLIGARE Flumigard Herbicide - Fast-Acting Flumioxazin Weed Killer for Rapid Control of Aquatic Algae and Terrestrial Weeds in Forestry, Aquatic, and Bare-Ground Sites - Granules -1lb - Image 2](https://m.media-amazon.com/images/I/81iKkjbl+0L.jpg) ![ALLIGARE Flumigard Herbicide - Fast-Acting Flumioxazin Weed Killer for Rapid Control of Aquatic Algae and Terrestrial Weeds in Forestry, Aquatic, and Bare-Ground Sites - Granules -1lb - Image 3](https://m.media-amazon.com/images/I/81iIqqhl1fL.jpg) ![ALLIGARE Flumigard Herbicide - Fast-Acting Flumioxazin Weed Killer for Rapid Control of Aquatic Algae and Terrestrial Weeds in Forestry, Aquatic, and Bare-Ground Sites - Granules -1lb - Image 4](https://m.media-amazon.com/images/I/71QNsMH07OL.jpg) ![ALLIGARE Flumigard Herbicide - Fast-Acting Flumioxazin Weed Killer for Rapid Control of Aquatic Algae and Terrestrial Weeds in Forestry, Aquatic, and Bare-Ground Sites - Granules -1lb - Image 5](https://m.media-amazon.com/images/I/81SvzepYpFL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ This product worked for me. *by D***R on June 28, 2023* We have a 20 year old 1/4 acre oval shaped pond located in southern Louisiana. The pond has several types of panfish, catfish, frogs, and turtles, as well as gets visited by plenty of wildlife. When we fist dug the pond I made the mistake of using duckweed to help clear the clay from the water. The duckweed worked and the water cleared up quickly. I then used diquat herbicide to kill the duckweed. This worked but we have never been able to completely kill off the duckweed. Over the twenty years, we have probably gone through several gallons of diquat to control the duckweed, along with blue dye to control the submerged weeds, but recently we had lost a lot of the ponds shade trees as a result of Hurricane IDA. The pond now gets sunlight all day which has made the duckweed uncontrollable and also increased the amount of what looks like Filamentous algae. The algae was forming submerged mats which the diquat had no effect on. After much internet research and out of desperation, we figured we had to try something else, but had to make sure it would not kill the fish or wildlife. We ordered the Flumigard Herbicide. According to the directions, we estimated we would need to use 1/2 of the container (powder) mixed with water in a 1 1/2 gallon hand sprayer. We also added 3 ounces diquat and a few ounces of 80% herbicide surfactant. We sprayed the pond as evenly as possible in May with 75 to 85 degree weather. We also added the normal 8 ounces of blue dye that we routinely add to the pond. Results were slow but after one week all of the duckweed was gone and the mats of algae were staring to show signs of reduction and breaking up. It has to be noted that May 2023 was a dry month in Louisiana. Dry like drought stage. So the pond was not getting any rain water. After two weeks, the mats were gone and we were able to remove some of the remaining clumps with a net. At three weeks the pond was really looking the best it had in a long time, but then we had five inches of rain. The pond turned green with all of the new rain water. You have to be careful with this product as the instructions said to not add any additional product for a minimum of 28 days. Instead of adding any herbicides, we added an additional 8 ounces of blue dye. POND LOOKS AWESOME. We are saving the other half of the container and am monitoring the algae growth. If it starts to show an increase, we will try the less expensive option of diquat with surfactant. As we added both herbicides at the same time, it is hard to say what actually did the trick other than the combination described above worked for us. Highly recommend. 07/10/23 UPDATE: Well its been about six weeks since out initial application describe above. It has been HOT, HOT, HOT with a couple downpours over the last few weeks. Pond was looking great until a couple days ago. We have a new growth on the surface which looks like pond scum or some kind of surface algae bloom. NO DUCKWEED and NO SUBMERGED weeds though. I used the other half of the Flumigard, 2 0z. 80% Surfactant, and 2 oz. Diquat in our 1 1/2 gallon hand sprayer. As soon as the herbicide it the surface, the scum changed from a bright green to a dark green and starting breaking up. Hopefully this does the trick and does not kill the fish. I am happy to see that the duckweed has not returned. It has been scorching hot (90 to 100 degrees) everyday with full sun beating on the pond. I have not checked the water temperature lately, but I would think it has to be in the mid to upper 80s. With all that said, I would say the product is doing what it is supposed to do, which is controlling the weeds. ### ⭐⭐⭐⭐⭐ One of the best one stop weed killing solutions I have found. *by F***T on April 24, 2025* This stuff is great. It kills weeds and grasses that want to grow on the court. If I add a bottle of Dawn detergent, or another surfactant it works wonders removing duckweed, watermeal, and other floating lake weeds. It has completely cleared our 2 acre cypress sink of duckweed, and watermeal, and it is now shown as a waterbody on google maps/earth. It has removed most of the duckweed and a lot of floating grasses from the lake so that my boat ramp and channel are now open and connected to the rest of the channels in Lake Iamonia which is huge. It makes the property more beautiful, more open to fish and wildlife, makes the property more valuable, allows for oxygen and sunlight to reach into the water. And allows me to boat around and enjoy life. It is the best for the price. Thank you Flumigard! ### ⭐⭐⭐⭐⭐ WORKS. *by W***I on August 9, 2023* Updating my review… I applied this in the beginning of august and now in September everything is DEAD. Well let me rephrase that…all the undesirable weeds are DEAD. The fish, turtles and frogs couldn’t be happier. I had a major duckweed problem across the entire pond and maybe 1/3 was covered in a small leaf lily plant. I applied this by hand tossing it out onto the lilies from the shore until the plastic jar was empty. I probably covered 1/8 to a max of 1/4 of the surface. There isn’t much in a package let’s be honest. The first week it killed the lilies in the areas I tossed it. Then the duckweed started to go. Eventually it all went. Here we are in the beginning of September and there isn’t a piece of duckweed or lily alive anywhere. It’s pretty amazing stuff. There is no aeration or fountain moving any water either. This stuff somehow on its own made it’s way through the water killing every weed in its path taking no prisoners. ## Frequently Bought Together - FLUMIGARD HERBICIDE (1 LB) - Alligare Diquat Herbicide - 128oz - Alligare 90 Non-Ionic Surfactant, 1 Gallon --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.om/products/193792935-alligare-flumigard-herbicide-fast-acting-flumioxazin-weed-killer-for-rapid](https://www.desertcart.com.om/products/193792935-alligare-flumigard-herbicide-fast-acting-flumioxazin-weed-killer-for-rapid) --- *Product available on Desertcart Oman* *Store origin: OM* *Last updated: 2026-05-04*