Best Aquatic Herbicide For Lily Pads: Compare 10 Options

#1 · Best Overall

1. Navigate Granular Herbicide

• Form: Granule
• Weight: 50 lb

Best for: Selective water-lily spot treatment.

Why it ranks #1: Its target list explicitly includes water lily, and its selective granules are described for spot treatment while allowing desirable native plants to remain.

Water lily is explicitly among the targets of Navigate Granular, whose selective formula is intended to leave desirable native aquatic species in place. Granule technology disperses through water, while the listing recommends spot-treating specific zones, making this a directly relevant option for localized lily-pad control.

Navigate lists water lily alongside Eurasian watermilfoil, bladderwort, coontail, and other aquatic plants, and describes its action as selective. That selectivity can help buyers target nuisance growth while retaining desirable native species for fish habitat, bottom cover, and oxygen production. Granule technology supports dispersion through the water, and the product is positioned for spot treatment in ponds, lakes, and freshwater habitats. The supplied description says control is optimum when used at first signs of growth.

Skip it if you need a liquid spray for emerged shoreline weeds; Airmax Shoreline Defense is listed for shoreline, beach, and dock reclamation.

Navigate is a strong fit for buyers targeting water lily in specific freshwater zones while seeking selective control. Its 50-pound granular quantity and recommendation to treat at early growth make scale and timing important considerations.

Listed on Amazon as: Navigate Granular Aquatic Herbicide – 50 lbs EPA-Approved Systemic Weed Control for Eurasian Milfoil, Water Lily, Bladderwort, etc. Pro Grade – Spot Treatment

#2 · Explicit Lily Control

2. CattPlex Pro

• Form: Spray
• Weight: 2 lb

Best for: Water-lily control for ponds.

Why it ranks #2: The verified target list names water lily, and the product is formulated for aquatic growth with stated people, pets, wildlife, swimming, and irrigation uses subject to label restrictions.

Explicitly listing water lily among its target plants, Crystal Blue CattPlex Pro gives pond owners a product whose stated control includes the growth behind lily-pad problems. Its quart of liquid comes in spray form, making it a straightforward option to consider when water lilies are part of a broader aquatic-weed issue.

The listed target range includes water lily alongside cattails, phragmites, water hyacinth, Eurasian watermilfoil, and other aquatic growth, so one product can address several named nuisances. Its spray form supports application to targeted growth, while the quart size is a manageable amount for pond owners evaluating a smaller container. The product is formulated for use around people, pets, wildlife, swimming, and irrigation or potable water, with some restrictions; follow the label for those limits.

Skip it if you need a granular treatment or a target not listed; Navigate Granular Aquatic Herbicide explicitly includes water lily.

A pond owner seeking a spray-form product with water lily explicitly among its targets may find this quart relevant. Check the label’s water-use restrictions and directions before treating a site used for swimming or irrigation.

Listed on Amazon as: CattPlex Pro – Aquatic Herbicide – Kills Cattails, Water Lilies, Grasses & More – Quart (32 Ounces)

#3 · Granular Concentrate

3. Hydrothol Granular Herbicide

• Form: Granule
• Weight: 20 lb

Best for: Granular treatment for active growth.

Why it ranks #3: This 11.2% endothall granular herbicide is intended for aquatic weeds and algae, but the listed facts do not specifically name water lily.

An 11.2 percent endothall formulation in granular form distinguishes Hydrothol 191 from liquid spray products. The supplied information advises applying it while weeds and algae are actively growing, giving buyers a timing cue for aquatic nuisance control; it does not specifically identify water lily as a target plant.

The granular product contains 11.2 percent mono (N, N-dimethylalkylamine) salt of endothall and is described as an herbicide and algaecide for aquatic nuisances. That combination gives buyers a treatment option when both weeds and algae are concerns. Applying during active growth follows the supplied guidance, while the listed application-rate range varies widely by water volume and treatment purpose. The 20-pound bag is a substantial quantity for planning applications, not a lily-specific promise.

Skip it if you require a product explicitly listing water lily; Navigate Granular Aquatic Herbicide names it among its target plants.

Hydrothol may suit buyers considering granular aquatic weed and algae control who can follow its active-growth timing and label rates. For lily pads specifically, the supplied target details do not establish water-lily control.

Listed on Amazon as: Hydrothol Aquatic Herbicide 20# Bag- Endothol 11%

#4 · Broad Weed Coverage

4. Weedtrine D Herbicide

• Form: Spray
• Weight: 4.54 g

Best for: Mixed aquatic weed spray control.

Why it ranks #4: Its description says it controls submerged, floating, and emergent weeds, including duckweed; the provided facts do not specifically confirm lily-pad control.

Broad-spectrum control across submerged, floating, and emergent weeds defines Applied Biochemists Weedtrine D, with duckweed explicitly included. Its liquid spray is diluted for use with a small hand-held sprayer, giving pond owners a practical application format for mixed aquatic growth, though water lily is not named in the supplied facts.

The listing describes Weedtrine D as a fast-acting, professional-grade diquat herbicide for submersed, floating, and emergent weeds, including duckweed. That range is relevant when a pond has more than one growth type, while its dilute-and-apply directions specify a small hand-held sprayer. A surfactant is called for when necessary on weeds at or above the water surface. Water is restricted for irrigation and drinking after use, so water-use planning is essential.

Skip it if you need water lily explicitly named; Crystal Blue CattPlex Pro lists water lily among its controlled aquatic growth.

Weedtrine D suits buyers treating mixed aquatic weeds who can use a small hand-held sprayer and observe post-application water restrictions. Its supplied facts name duckweed but do not specifically confirm water-lily control.

Listed on Amazon as: Weedtrine D Aquatic Herbicide 1 Gallon Spray for Fast, Broad-Spectrum Control of Duckweed, Floating, Submersed & Emergent Weeds, Professional-Grade, Easy to Use, Diquat Active

#5

5. Tsunami DQ Herbicide

• Form: Liquid
• Weight: 2 lb

Best for: Fast-action aquatic weed control.

Why it ranks #5: This 37.3% diquat liquid targets a range of aquatic weeds, but its listed examples do not include water lily and some state sales are restricted.

A fast-acting diquat formula is the defining feature of Tsunami DQ, which is described as targeting submerged, floating, and emerged aquatic weeds. That range suits pond and lake owners dealing with several kinds of unwanted growth, though water lily is not specifically named among the supplied target examples.

The product is a liquid concentrate containing 37.3 percent diquat dibromide, paired with claims of rapid control across submerged, floating, and emerged weeds. That breadth can serve buyers facing mixed aquatic growth rather than a single explicitly named plant. Spray drift precautions and equipment-cleaning directions make careful application part of the workflow. The listing also excludes sale in several states, so geographic eligibility is a practical first check before choosing it.

Skip it if you need water lily explicitly named as a target; Crystal Blue CattPlex Pro lists water lily among its controlled plants.

Choose Tsunami DQ when a pond or lake has mixed submerged, floating, or emerged weeds and its listed sale restrictions do not apply. Its supplied target information does not specifically name water lily, so verify fit against the label.

Listed on Amazon as: Tsunami DQ Aquatic Herbicide- Quart – 37.3 Percent Diquat Dibromide – Concentrated Aquatic Weed Killer for Lakes and Ponds – Duckweed, Watermeal, Curly Leaf, Pondweed & Many More

#6

6. Nufarm AquaNeat Herbicide

• Form: Spray
• Weight: 25 lb

Best for: Emerged aquatic weed spraying.

Why it ranks #6: Its 53.8% glyphosate formulation is for emerged aquatic weeds and brush, making it less directly supported for lily pads than products naming water lily.

A 53.8 percent glyphosate formulation for aquatic settings makes Nufarm AquaNeat a spray option for emerged weeds and brush. Its listed settings span rivers, lakes, irrigation ditches, wastewater treatment facilities, and estuaries, but the supplied details do not specifically identify water lily as a target.

AquaNeat is described for emerged aquatic weeds and brush, distinguishing it from products whose supplied claims focus on submerged plants. Its spray form is suited to application on emerged growth, while the listed range of aquatic sites includes rivers, lakes, irrigation ditches, wastewater treatment facilities, and estuaries. The 25-pound product is a larger container to account for when planning storage and handling. Read the label for application directions and site-specific use before treatment.

Skip it if you want water lily explicitly named; Crystal Blue CattPlex Pro lists water lily among its controlled aquatic plants.

AquaNeat may fit buyers treating emerged weeds or brush across the aquatic sites named in its listing. For a lily-pad job, its supplied details do not confirm water-lily control, so check the label before selecting it.

Listed on Amazon as: nufarm AquaNeat Aquatic Glyphosate Herbicide

#7

7. Roundup Custom Herbicide

• Form: Liquid
• Weight: 27 lb

Best for: Flexible emerged-weed applications.

Why it ranks #7: The 53.8% glyphosate product controls emerged weeds by land or water, but its listed facts do not identify water lily as a target.

Application flexibility across land or water is the defining feature of Roundup Custom, a 53.8 percent glyphosate liquid for aquatic and terrestrial use. It is described as non-selective and effective on more than 190 species of emerged weeds, brush, and vines, not as a specifically named water-lily treatment.

The product’s non-selective action on more than 190 species of emerged weeds, brush, and vines gives buyers broad target coverage where land and water meet. Its application flexibility lets users choose a surfactant, tank mix, or custom herbicide blend for the job, so the treatment can be tailored to the listed use site. The 2.5-gallon container is a larger-volume choice that requires storage and handling planning. Follow the supplied application and safety directions.

Skip it if you need water lily explicitly listed or selective targeting; Navigate Granular Aquatic Herbicide lists water lily and selective control.

Roundup Custom fits buyers needing flexible, broad-spectrum control of emerged weeds and brush across aquatic or terrestrial sites. Its non-selective action is an important boundary, and the supplied target information does not specifically name water lily.

Listed on Amazon as: Roundup Custom 53.8% Glyphosate for Aquatic & Terrestrial Use 2.5 gallons

#8

8. Roundup Custom Aquatic Herbicide

• Form: Liquid

Best for: Broad-spectrum emerged weed control.

Why it ranks #8: This broad-spectrum postemergence product lists more than 190 species, but the supplied target examples do not specifically include water lily.

Control of more than 190 listed species is the central claim for Roundup Custom, a non-selective systemic aquatic and terrestrial herbicide. Its broad range covers weeds, brush, and vines across several site categories, but the supplied target examples do not specifically identify water lily.

Roundup Custom is described as a postemergence herbicide for aquatic, crop, non-agricultural, industrial turf, ornamental, forestry, roadside, and utility rights-of-way uses. That range helps buyers assess it for multiple site types rather than pond-only work. Its systemic, non-selective action is stated to control weeds, brush, and vines by land or water, so target choice matters. The listing says it is now known as AquaMaster; follow the product label and protective-clothing directions.

Skip it if you need water lily explicitly named as a target; Navigate Granular Aquatic Herbicide lists water lily and selective control.

This Roundup Custom listing may suit buyers needing broad postemergence control across the aquatic and terrestrial sites named. Its non-selective action warrants careful target selection, and the supplied details do not specifically confirm water-lily control.

Listed on Amazon as: Roundup Custom Aquatic Terrestrial Herbicide 1 Jug (2.5 Gal.)

#9

9. Airmax Shoreline Defense

• Form: Liquid
• Weight: 2 lb

Best for: Shoreline emergent weed treatment.

Why it ranks #9: It targets emergent shoreline weeds such as cattails and phragmites, but the listed information does not identify water lily or submerged lily-pad treatment.

Root control for persistent emergent weeds is the central claim of Airmax Shoreline Defense, which targets cattails, phragmites, grasses, weeds, and brush. It is intended for freshwater and brackish water, making it relevant to shoreline, beach, or dock reclamation rather than a specifically documented lily-pad treatment.

The liquid herbicide is described as killing emergent weeds down to the root, a useful distinction for buyers addressing persistent shoreline growth. Its listed targets include cattails, phragmites, grasses, weeds, and brush, and it can be used in fresh and brackish water. The directions recommend applying with a surfactant for best results, so that addition belongs in the treatment workflow. The supplied information does not specifically name water lily among its targets.

Skip it if you need water lily explicitly listed; Navigate Granular Aquatic Herbicide names water lily among its targets.

Shoreline Defense suits pond owners reclaiming a beach, dock, or water’s edge from emergent weeds in fresh or brackish water. Its supplied target list does not establish lily-pad control, and best-results guidance calls for surfactant.

Listed on Amazon as: Airmax Shoreline Defense Emergent Weed Control Herbicide, 1 Quart

#10

10. Hi-Yield Killzall Aquatic Herbicide

• Form: Liquid
• Weight: 2.5 lb

Best for: Aquatic and non-crop weed control.

Why it ranks #10: Its examples focus on thistle, chickweed, pigweed, and ragweed; the supplied facts do not establish water lily control, so it is the weakest match.

A 32-ounce liquid concentrate labeled for aquatic and other non-crop sites makes Hi-Yield Killzall a compact option for broad weed and grass control. Its supplied target examples include Canadian thistle, chickweed, and pigweed; water lily is not specifically named in the provided details.

Killzall is described as a non-selective weed and grass killer controlling annual and perennial grasses, broadleaf weeds, and listed woody brush species. The concentrate is mixed with water at the label’s suggested rate, then sprayed thoroughly over foliage, giving buyers a defined mixing-and-application workflow. Its 32-ounce bottle is stated to cover up to one acre. The listing cautions that mixing with materials not recommended on the label may reduce performance, so follow label directions.

Skip it if you need water lily specifically listed; Crystal Blue CattPlex Pro names water lily among its controlled aquatic growth.

Killzall may suit buyers seeking a liquid concentrate for listed weeds in aquatic or non-crop sites, with mixing and foliage spraying as the workflow. The supplied details do not specifically establish water-lily control.

Listed on Amazon as: Hi-Yield (33700) Killzall Aquatic Herbicide (32 oz)