Product Overview

Product Overview

ProcellaCOR treats the weeds that keep coming back using a new mechanism and a new active herbicide for fast and long-lasting spot treatment.

ProcellaCOR’s active ingredient provides long-term control for Hydrilla, Milfoil, Crested Floating Heart, and other tough-to-control aquatic weeds. So you can use less material and get longer control.

If you’re tired of treating and re-treating with limited results, learn more about ProcellaCOR today and get your water body on the right track. Finally.


Milfoil grows from the bottom of this lake and lurks on the surface. This is just one example of invasive weeds that can interfere with your water body's ecosystem.

Researchers have observed little to no impact on native plant species when treating with Procellacor.

Stewarding Our Most Precious Resource: Water

Every water body has at least one nuisance weed that keeps coming back year after year. And that means spraying chemicals to control it year after year.

Not with ProcellaCOR®. This unique formula requires 40x-100x less active ingredient and achieves significantly longer control.

With a Reduced Risk classification from the EPA, it is designed to reduce risk To Our Health, Nontarget Plants, And Our Water Supply.

Even the EPA says ProcellaCOR is “practically non-toxic” to animals and humans.

Plus, it’s applied by the best in the business. Only PRO Certified ProcellaCOR Specialists, highly trained aquatic management professionals, can provide invasive weed management with ProcellaCOR. So You Know It’s Done Right.

Once a specialist sprays ProcellaCOR near the weeds you’ve been dealing with, say goodbye! Those weeds won’t be around much longer to clog your boat propeller, spoil your view, make it unpleasant to swim or fish, etc…

Longer Lasting Results

No one wants repeated applications with the same average results. That’s why SePRO has been hard at work creating a formula that gives you superior control with precision dosing. This new technology is more effective, while protecting wildlife habitat from nuisance weeds.


ProcellaCOR is available only through SePRO Stewards of Water who are PRO Certified as ProcellaCOR Specialists.

ProcellaCOR is only available from companies having gone through certification. These PRO Certified companies have undergone training and have successfully passed SePRO's certification. Only SePRO PRO Certified ProcellaCOR Specialists are properly trained to assess, prescribe, and implement ProcellaCOR Aquatic Herbicide.


For superior treatment of:

Labels and SDS

EC Label



SC Label

Registered States

About Aquatic Weeds

About Aquatic Weeds

What are nuisance aquatic weeds?

  • They are non-native species that threaten the diversity or abundance of native species.
  • They interrupt the use of the water, whether it is used for agriculture, recreation, or commercial purposes.
  • They disrupt the ecological stability of the water body.

What types of damage can nuisance aquatic weeds cause?1

  • They can harbor dangerous toxins that pose a health risk.
  • They can create entanglement, causing safety issues for boaters and swimmers.
  • They can create areas of stagnant water, which are ideal breeding grounds for mosquitoes. This can increase the risk of insect-borne disease.
  • They can reduce water flow, making it difficult to use the water for irrigation.
  • They create an economic burden of more than $10 million per year.


Nuisance aquatic weeds can be difficult to control. They can clog boat propellers and create a hazard for swimmers.

Learn more about ProcellaCOR® for effective treatment of:


1 Benefits of Controlling Nuisance Aquatic Plants and Algae in the United States, Getsinger et. al.

The Benefits of Using ProcellaCOR

The Benefits of Using ProcellaCOR

ProcellaCOR® isn’t just another treatment for aquatic weeds.

It does something different. Researchers have described it as having the best features of other technologies combined.

These are the most significant features that make ProcellaCOR unique:

  • ProcellaCOR is selective. It won’t hurt the plants that you want in your pond.
  • It lasts longer. Forget multiple follow-up visits to keep your water free of Milfoil, Hydrilla, Crested Floating Heart, and others. ProcellaCOR will keep them at bay for much longer than other solutions.
  • Reduced Risk. Safety is important to us. To you. To your kids. And our development of ProcellaCOR was no different. Keep enjoying your lake or pond for swimming, fishing, boating, and all the other things you enjoy and love about it.
  • It reduces your chemical usage through longer control and less product required for treatment. (Fewer chemicals also means cost savings, an added bonus).


Researchers have observed little to no impact on native plant species when treating with Procellacor.

How does ProcellaCOR provide these benefits?

ProcellaCOR specifically targets a hormone mechanism that is unique to plants. Only certain plants will respond to this targeting. ProcellaCOR will move to the root of these plants, preventing them from growing back.


Which nuisance aquatic weed are you having trouble with?

For Water Resource Managers

Water Resource Managers

ProcellaCOR® is a groundbreaking new product that can only be implemented by a PRO Certified ProcellaCOR Specialist.

PRO Certified ProcellaCOR Specialists are individuals who are highly skilled and trained in the use of ProcellaCOR and overall stewardship of water bodies.

They are certified to diagnose, prescribe, and implement ProcellaCOR.

They are employees or owners of licensed companies that undergo comprehensive training, participate in annual training events, and must pass rigorous examinations.

Talk to a SePRO technical specialist for more information about this program.


Nuisance aquatic weeds can be difficult to control. They can clog boat propellers and create a hazard for swimmers.

Variable Milfoil treated with ProcellaCOR (one week post-treatment).

Lake Users

Living on a lake is supposed to be a laid-back, carefree experience. But what happens when invasive weeds take hold of your water body?

Enjoyment, recreational use, property value… It’s all diminished when pesky weeds have taken root.

Fortunately, you don’t need to worry about these issues for much longer. There are experts who can protect and restore this precious natural resource.

PRO Certified ProcellaCOR® Specialists are highly trained in selecting the best and safest technologies available to solve your aquatic weed problems. They’re the only companies certified to use ProcellaCOR.


PRO Certified ProcellaCOR Specialists use ProcellaCOR for effective treatment of:

Want to find a PRO Certified ProcellaCOR Specialist near you? 

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Experts in Aquatic Solutions

SePRO’s Technical Specialists are trained to assist you with your toughest issues, from aquatic weeds that keep coming back to nusiance or toxic algae that are plaguing a water body. See how we can help.