This species is Quarantined: Class B Noxious Weed  

Treatment Concerns: 

• Removing mat of dead phragmites canes can assist in the growth of desirable vegetation by allowing sunlight to reach the soil surface. 

General Guidance:

• Most methodologies alone will not suffice and should be part of an integrated pest management plan.  
• Which methods you choose also depend on the purpose of control: eradication (removal of all plants, plant parts, and seed bank), or containment (reducing seed production, reducing spread, reducing growth, removing individual plants near site of concern).  
• All action promotes disturbance - mechanical, chemical, and even just doing nothing. Our work is in figuring out how to minimize disturbance and maximize positive benefits. 
• The intent of mechanical or chemical treatment is to kill target plants. 
• Management options listed below are representative of research by institutions like The Nature Conservancy, the Great Lakes Phragmites Collaborative, Michigan Department of Environmental Quality, and the US Fish and Wildlife Service. 
• Here are additional guidance documents on best management practices for Phragmites/common reed. 
• Great Lakes Phragmites Collaborative 
• US Fish and Wildlife Service Phrag Book 

Summary of Mechanical Treatment Options

• Mechanical treatment at any scale can increase the efficacy of other management actions by removing dead stems and increasing access for future management at the site 
• Mechanical removal can throughout the year. These methods can be used in the dormant period to clear dead and senesced Phragmites for future management at the site.  
• Mechanical cutting and removal of Phragmites before seed heads mature may prevent unwanted spread, but cutting the stalks above ground level without other treatment may stimulate growth. 
• Mechanical treatment can sometimes cause greater disturbance than if the site was left alone or if another treatment option was utilized. 
• If pulling or digging, remember that soil disturbance can encourage growth from seed bank.    

Summary of Chemical Treatment Options

• Removing dead stems may allow for increased herbicide contact with the living Phragmites tissues when herbicide is applied, and can allow for easy spot treatment of new shoots in the spring and early summer. 
• Be careful not to damage or kill nearby desirable plants when conducting management work.  
• Always read and follow pesticide label directions. Application of pesticides may require a certification from the Agency of Agriculture, Food and Markets. The Agency website provides information on what applicator certification is needed.
• If a treatment for a specific species isn’t listed on a given product, don’t use it. 
• Product labels may require you to check Endangered Species Protection Bulletins. Learn more about protection bulletins here.  
• Understand the risk of, and how to avoid, drift.  
• The timing of some chemical treatments may overlap with when certain plants are flowering, and, in order to protect pollinators, herbicides should not be applied when plants are flowering. To mitigate the risk, consider utilizing an integrated pest management plan, such as cutting the plants to set back flowering time, and then applying pesticides in the lowest effective volume. 
• Chemical treatments pose a risk to plants, animals, and humans, but can be used in ways that greatly reduce this risk, and provide a solution to otherwise hopeless scenarios. 
• For questions regarding the appropriate chemical to use for a particular situation, or general information on pesticide safety, ingredients, and more, contact the Vermont Agency of Agriculture, Food & Markets’ Pesticide Program.  
• For questions about certification and continuing education credit opportunities, contact the Vermont Agency of Agriculture, Food & Markets’ Pesticide Program.  
• For questions about additional training opportunities, contact the UVM Extension Pesticide Safety Education Program.  
• Special permits are required to apply herbicides in a wetland. Contact Vermont Department of Environmental Conservation’s Wetlands Section for more information.  
• Herbicides cannot be applied within 200 feet of a Public Water Source Protection Area unless the Water Supply Division is notified. Call 1-800-823-6500 for more information. Similar requirements may be in place for proximity to private water sources.  
• Forests that are certified organic or adjacent to organically certified agricultural lands may carry restrictions regarding chemical application. Check with the Northeast Organic Farming Agency of Vermont for more information.  
• The National Pesticide Information Center provides objective, science-based information about pesticides. Check out their website for more information or call 1-800-858-7378. 

Biocontrol

• There are currently no known insect biocontrol agents for Phragmites.   
• Although they will not eradicate Phragmites, livestock biocontrol agents can reduce the severity of impacts from an infestation. More information is needed, and livestock grazing is not an appropriate treatment at all sites.