Managing lily pads in ponds and lakes is an essential task for anyone maintaining healthy aquatic ecosystems. While lily pads provide beauty and shelter for fish, they can quickly take over, blocking sunlight and reducing oxygen levels in the water.
To restore balance, many property owners rely on aquatic herbicides designed specifically to control lily pad growth.The right aquatic herbicide works effectively to reduce infestations while keeping the water safe for fish, birds, and other wildlife.
Some options deliver quick, visible results, while others provide systemic control to stop regrowth. The key is choosing a solution that matches the size of the infestation and the unique conditions of the pond or lake.
In this detailed guide, we’ll cover the 20 best aquatic herbicides for lily pads. Each product is explained in detail, complete with its benefits, drawbacks, and suitability for different environments. By the end, you’ll know exactly which herbicide will help you achieve long-term control of lily pads.
20 Best Aquatic Herbicide For Lily Pads
1. Navigate Aquatic Herbicide – Best for Large Ponds
Navigate Aquatic Herbicide is a proven solution for managing lily pads in larger ponds and lakes. It’s formulated as a granular herbicide, which sinks to the bottom and targets the roots directly. This systemic approach ensures longer-lasting results.
Pond owners value Navigate because it works against tough-rooted aquatic weeds. It often takes just a few weeks to notice improvements, making it reliable for restoring balance. Its ability to stop regrowth sets it apart from surface-only treatments.
Safe for fish and aquatic life when applied properly, Navigate is versatile and effective. It does, however, require careful dosage to avoid oxygen depletion in water bodies. It’s most effective when spread evenly over infested areas.
Pros:
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Long-lasting results
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Targets roots
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Works on lilies
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Safe for fish
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Easy to apply
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Granular form
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Trusted product
Cons:
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Higher cost
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Needs precision
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Slower cold water
2. Reward Diquat Herbicide – Best Contact Herbicide
Reward Diquat is known for its fast action on lily pads. As a contact herbicide, it burns down leaves and stems quickly, producing visible effects in days. It’s ideal for spot treatments and small infestations.
Because it doesn’t kill roots, regrowth may occur after several weeks. Still, many pond owners choose Reward Diquat for its ability to provide immediate results. It’s particularly helpful when quick clearance of water surfaces is needed.
Safe for use in fishing, swimming, and irrigation waters, Reward Diquat is versatile. Reapplication may be required for long-term control. Following label directions ensures maximum effectiveness and safety.
Pros:
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Fast results
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Easy spraying
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Broad-spectrum use
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Popular choice
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Safe with care
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Spot treatment
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Works quickly
Cons:
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No root kill
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Needs reapplication
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Shorter effect
3. Sonar Aquatic Herbicide – Best Systemic Control
Sonar Aquatic Herbicide is one of the most effective systemic options for lily pads. Its active ingredient, fluridone, disrupts photosynthesis, killing plants slowly but thoroughly. Over several weeks, it eliminates lily pads from the root upward.
The advantage of Sonar is its long-lasting effect. By treating the whole plant system, it prevents regrowth for seasons. Available in both liquid and pellet form, it suits different water body conditions.
Safe for aquatic life, Sonar is trusted in both public and private ponds. Its main drawback is patience, as results appear gradually over one to three months. Still, its reliability makes it a top choice.
Pros:
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Systemic control
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Prevents regrowth
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Multiple forms
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Safe for fish
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Works thoroughly
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Long-lasting
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Trusted product
Cons:
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Slow results
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Higher price
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Needs coverage
4. Aquathol K Herbicide – Best Fast-Acting Liquid
Aquathol K is a strong liquid herbicide widely used for lily pad infestations. It delivers rapid results by breaking down foliage within days. Its active ingredient, endothall, targets a range of aquatic plants.
This herbicide is highly effective for dense infestations. By clearing surfaces quickly, it restores ponds for recreation and fishing. It’s often chosen by professional aquatic managers for its dependability.
Aquathol K is considered safe when applied correctly. It breaks down quickly, minimizing long-term risks. Proper dosage is important to avoid stressing fish populations.
Pros:
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Very fast action
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Liquid formula
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Broad-spectrum use
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Works on lilies
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Safe with care
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Breaks down fast
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Reliable product
Cons:
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Shorter duration
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Needs repeats
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May stress fish
5. Cutrine Plus – Best for Algae and Lily Pads
Cutrine Plus is a copper-based herbicide originally designed for algae but also effective on lily pads. It works as a contact herbicide, burning surface growths quickly. It’s useful for ponds with both algae and lily pad problems.
Its dual-purpose nature makes it valuable for general pond maintenance. Safe for livestock watering and swimming, it fits into routine management. Users often apply it in combination with other herbicides.
Cutrine Plus does not kill roots, so repeat applications may be necessary. Its copper formulation can also build up over time if overused. However, it remains a popular and affordable option.
Pros:
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Dual-purpose use
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Quick results
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Safe for fish
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Safe for livestock
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Works on algae
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Affordable option
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Easy to use
Cons:
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Root regrowth
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Multiple doses
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Copper buildup
6. Shore-Klear Aquatic Herbicide – Best for Shoreline Control
Shore-Klear is a glyphosate-based herbicide designed for shoreline vegetation, including lily pads. It works by moving through the plant system, targeting both leaves and roots. This ensures more permanent results.
The product is especially effective when applied directly to lily pad leaves. Over time, the active ingredient penetrates, stopping regrowth. It’s often paired with surfactants to improve sticking and absorption.
Safe for fish and wildlife, Shore-Klear is versatile and powerful. Its main limitation is that it works slowly, taking several weeks. Consistent application ensures better results.
Pros:
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Systemic action
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Root control
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Safe for fish
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Works on lilies
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Strong formula
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Versatile use
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Long-lasting
Cons:
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Slower action
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Needs surfactant
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Repeated sprays
7. CattPlex Aquatic Herbicide – Best Ready-to-Use
CattPlex is a ready-to-use aquatic herbicide formulated for lily pads, cattails, and other weeds. Its ease of application makes it popular for small ponds and residential areas. No complicated mixing is required.
It’s applied directly to foliage, where it penetrates and kills the plant. Over time, it moves to the roots for lasting control. Safe for ponds with fish, it provides peace of mind for homeowners.
CattPlex may not be as strong as commercial options but works well for smaller infestations. It is often paired with pond dyes to reduce sunlight and prevent regrowth. Its convenience is a major selling point.
Pros:
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Easy to use
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Root control
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Ready-to-spray
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Safe for fish
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Works on lilies
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Great for homes
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Effective foliage kill
Cons:
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Weaker formula
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Needs repeats
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Small scale use
8. Clearcast Aquatic Herbicide – Best for Selective Control
Clearcast Aquatic Herbicide is designed for selective control of floating and emergent weeds like lily pads. Its active ingredient, imazamox, provides systemic action, killing plants down to the roots. This ensures long-term control.
It’s particularly valued for its safety profile. Clearcast is approved for use in waters used for drinking, fishing, and swimming. It is also gentle on many non-target plants, making it selective.
Results may take weeks to appear, but they are effective and lasting. Its slow action requires patience, but regrowth is minimized. It’s a sustainable choice for environmentally conscious pond managers.
Pros:
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Selective control
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Root action
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Safe for fish
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Safe for humans
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Works on lilies
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Long-lasting
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Eco-friendly
Cons:
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Slow action
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Higher price
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Needs coverage
9. Weedtrine-D Aquatic Herbicide – Best Affordable Option
Weedtrine-D is a cost-effective contact herbicide for lily pads. It works quickly on foliage, delivering visible results in days. Many pond owners choose it for its affordability and effectiveness.
While it doesn’t kill roots, it clears surfaces efficiently. It’s commonly used for spot treatments and smaller infestations. Regular application helps maintain balance.
Weedtrine-D is safe when applied correctly but requires care to avoid oxygen depletion. Its affordability makes it attractive for budget-conscious users. Paired with systemic options, it becomes even more powerful.
Pros:
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Affordable price
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Fast results
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Spot treatment
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Safe with care
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Easy to apply
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Popular choice
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Broad use
Cons:
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No root kill
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Short results
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Needs repeats
10. Aquacide Pellets – Best Granular Treatment
Aquacide Pellets are granular herbicides designed for submerged and floating weeds like lily pads. They sink to the bottom, targeting roots for long-term control. Easy to spread, they provide reliable coverage.
This product is particularly effective in small and medium-sized ponds. It ensures that rhizomes are targeted, preventing regrowth. Results typically appear within several weeks.
Aquacide Pellets are safe for fish and wildlife when used correctly. They are a go-to for homeowners looking for systemic control. Precision in application is key to success.
Pros:
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Root targeting
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Granular form
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Long-lasting
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Works on lilies
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Safe for fish
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Easy to apply
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Reliable results
Cons:
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Slower action
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Higher cost
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Needs precision
11. Rodeo Aquatic Herbicide – Best Professional Use
Rodeo is a glyphosate-based aquatic herbicide trusted by professionals. It provides systemic control of tough aquatic plants, including lily pads. By targeting roots, it offers lasting results.
This herbicide is effective in both large and small water bodies. It’s often combined with surfactants for improved effectiveness. Results appear over several weeks.
Rodeo is safe for aquatic life when used properly. It is approved for use in irrigation and drinking water sources. Its professional-grade quality makes it a top choice for managers.
Pros:
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Professional-grade
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Root control
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Works on lilies
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Safe for fish
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Long-lasting
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Versatile use
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Reliable product
Cons:
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Needs surfactant
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Slower action
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Higher cost
12. Captain XTR – Best for Stubborn Weeds
Captain XTR is a copper-based herbicide formulated for algae but also effective on lily pads. It works as a contact treatment, delivering quick foliage burn. It is especially strong in waters with heavy infestations.
The product is valued for its fast action and reliability. It’s safe for fish and livestock when applied correctly. Many managers use it for multi-weed infestations.
However, like other copper-based herbicides, it does not kill roots. Repeat applications may be necessary for lasting control. It remains popular for its broad effectiveness.
Pros:
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Quick action
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Works on lilies
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Safe for fish
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Livestock safe
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Reliable results
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Popular product
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Effective dense areas
Cons:
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Root regrowth
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Copper buildup
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Multiple uses
13. Alligare Glyphosate 5.4 – Best High-Strength Formula
Alligare Glyphosate 5.4 is a concentrated herbicide for aquatic weeds, including lily pads. Its systemic action targets roots, preventing regrowth. Its strong concentration makes it effective for large infestations.
Users appreciate its long-lasting results. It is commonly used in lakes, reservoirs, and irrigation waters. It requires careful mixing and dosage for safe use.
Though powerful, it’s safe when applied as directed. Results appear in weeks, ensuring sustainable control. Its strength makes it a favorite for tough cases.
Pros:
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High strength
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Systemic action
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Long-lasting
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Works on lilies
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Safe when used
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Professional-grade
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Strong formula
Cons:
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Needs care
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Slower results
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Higher cost
14. AquaNeat Aquatic Herbicide – Best Budget Systemic
AquaNeat is a glyphosate-based herbicide offering systemic control of lily pads. It’s considered a cost-effective alternative to premium options like Rodeo. By targeting roots, it prevents regrowth.
The product is flexible for different pond sizes. It’s commonly used in irrigation canals, reservoirs, and farm ponds. Application with a surfactant improves performance.
Safe when applied correctly, AquaNeat is versatile and reliable. Its affordability makes it accessible to many users. It’s ideal for those looking for long-term control without overspending.
Pros:
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Affordable price
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Systemic action
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Root control
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Safe for fish
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Versatile use
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Works on lilies
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Long-lasting
Cons:
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Needs surfactant
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Slower results
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Repeat sprays
15. Navigate Pellets – Best Targeted Application
Navigate Pellets are granular herbicides formulated for tough-rooted aquatic plants like lily pads. They sink to the bottom, attacking rhizomes directly. This ensures long-term results.
They’re especially effective in small areas or around docks. Their precision reduces waste and improves efficiency. Results appear gradually over several weeks.
Safe for aquatic life, Navigate Pellets are widely trusted. They require even application for maximum success. They remain a favorite among homeowners and managers alike.
Pros:
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Root targeting
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Long-lasting
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Granular form
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Safe for fish
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Works on lilies
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Precise use
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Reliable option
Cons:
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Slower effect
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Higher cost
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Needs precision
16. Tribune Herbicide – Best Contact Alternative
Tribune Herbicide is another diquat-based option similar to Reward. It provides fast-acting contact control of lily pads and other aquatic weeds. Visible results often appear within days.
Because it doesn’t target roots, regrowth can occur. However, it’s affordable and effective for quick treatments. Spot spraying is especially convenient with Tribune.
Safe when applied correctly, Tribune is versatile for recreational waters. Its rapid effect makes it useful for urgent needs. It’s often combined with systemic options.
Pros:
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Quick action
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Affordable price
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Easy to spray
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Works on lilies
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Safe with care
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Popular option
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Reliable contact
Cons:
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No root kill
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Needs repeats
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Short results
17. Polaris Aquatic Herbicide – Best for Shoreline Weeds
Polaris Aquatic Herbicide uses imazapyr to control tough aquatic plants, including lily pads. It works systemically, moving through the plant to kill roots and prevent regrowth.
It’s often used along shorelines and wetlands. Its selective control allows managers to target specific species. Results appear gradually but are long-lasting.
Polaris is safe for fish and aquatic animals when applied properly. It requires care with non-target plants, as it can affect desirable vegetation. Its power makes it a strong option.
Pros:
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Root control
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Selective action
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Safe for fish
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Works on lilies
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Long-lasting
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Trusted formula
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Systemic option
Cons:
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Slower action
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Affects non-targets
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Higher cost
18. Aquapro Aquatic Herbicide – Best for Professionals
Aquapro is a glyphosate-based herbicide designed for aquatic environments. It provides systemic action, eliminating lily pads from the root up. It’s trusted by professionals for its reliability.
It’s approved for use in irrigation and drinking water sources. Safe when used properly, it offers peace of mind. It’s effective for both small and large water bodies.
Though results take time, they last for seasons. Its professional strength ensures dependable outcomes. Many managers consider it a staple herbicide.
Pros:
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Professional-grade
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Root control
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Safe for fish
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Reliable results
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Works on lilies
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Long-lasting
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Trusted brand
Cons:
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Slower action
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Needs surfactant
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Higher cost
19. Rodeo Concentrate – Best Concentrated Glyphosate
Rodeo Concentrate is a powerful glyphosate herbicide for aquatic weeds. It offers systemic control, targeting roots for long-term results. Its high concentration makes it effective for severe infestations.
This herbicide is used in large ponds, lakes, and canals. It’s safe for aquatic life when applied correctly. A surfactant is often added for better performance.
Results appear in several weeks but last long-term. Rodeo Concentrate is popular among both professionals and homeowners. Its strength ensures effectiveness.
Pros:
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Strong formula
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Systemic action
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Long-lasting
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Works on lilies
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Safe when used
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Concentrated form
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Professional use
Cons:
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Slower results
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Needs surfactant
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Higher cost
20. SePRO ProcellaCOR – Best Innovative Herbicide
SePRO ProcellaCOR is one of the newest aquatic herbicides available. It’s designed for fast, systemic control of tough weeds, including lily pads. Its unique chemistry makes it highly effective at low doses.
The product is valued for its innovation and long-term results. It works quickly while preventing regrowth for seasons. Many managers consider it a game-changer in aquatic weed control.
ProcellaCOR is safe for fish, wildlife, and humans when applied properly. Its low use rates reduce environmental impact. It is especially popular in large lakes and reservoirs.
Pros:
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Innovative formula
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Fast systemic action
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Low-dose use
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Long-lasting
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Works on lilies
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Safe for fish
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Eco-friendly
Cons:
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Higher cost
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Limited supply
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Needs precision
Aquatic Herbicide For Lily Pads FAQs
1. Are aquatic herbicides safe for fish and wildlife?
Yes, when applied according to label directions, most aquatic herbicides are safe for fish, birds, and other wildlife. Always follow instructions to avoid oxygen depletion in the water. Using the right dosage is essential for environmental balance.
2. How long does it take for herbicides to kill lily pads?
Contact herbicides show results in days, while systemic herbicides take weeks to months. Systemic options are slower but provide long-term control by killing roots. Patience ensures more sustainable results.
3. Do I need a permit to use aquatic herbicides?
In many states and regions, permits are required for herbicide use in public or large water bodies. Private pond owners may have different regulations. Always check local laws before applying treatments.
4. Can I use herbicides in ponds used for swimming?
Yes, many aquatic herbicides are safe for swimming once application has dried or settled. Label directions specify waiting periods. It’s always best to wait at least 24 hours.
5. Will herbicides harm desirable plants?
Selective herbicides may spare certain plants, but non-selective ones kill all vegetation. Careful application helps protect desirable species. Using precision tools improves accuracy.
6. How often should I reapply herbicides?
Contact herbicides may need reapplication every few weeks. Systemic herbicides often last a season or longer. Reapplication schedules depend on infestation levels.
7. What’s the best time to apply herbicides?
Herbicides work best when lily pads are actively growing, typically in late spring to summer. Warmer water temperatures improve effectiveness. Calm weather ensures even application.
Conclusion
Choosing the best aquatic herbicide for lily pads depends on your pond size, infestation level, and long-term goals. Contact herbicides deliver quick surface results, while systemic herbicides provide deep, lasting control by killing roots. Both types are valuable, often working best when combined in a management strategy.
By carefully selecting a safe and effective herbicide, you can restore balance to your pond while protecting fish and wildlife. Always follow label directions, apply with precision, and consider pairing herbicides with cultural practices like pond dyes or aeration.
Lily pads don’t have to overwhelm your water body—solutions exist for every situation. With the 20 best herbicides outlined here, you can take action confidently.
Take charge today and reclaim your pond’s beauty by choosing the right aquatic herbicide for lily pads.