ODA Announces 2019 Gypsy Moth Open Houses

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The gypsy moth is a non-native pest that feeds on leaves and needles of over 300 different trees in the buckeye state. The feeding injury occurs in the spring and early summer when populations are present. The early season feeding, when heavy, causes the plants to push new leaves that ultimately are the food-factories for the rest of the year. Healthy deciduous trees can usually recover as long as there isn't repeat defoliation year after year. Evergreens can die in a single season as a result of the feeding injury. 


The gypsy moth is currently in the egg mass stage and will be in this state until the eggs begin to hatch this spring. Eggs were laid by female moths last summer. The masses can be appear on any surface including: trees, fences, houses, sheds, garden decorations and more. 


Adult Gypsy Moths Laying Egg Masses
Photo Credit, Amy Stone, OSU Extension


Gypsy Moth Egg Mass Laid on Outdoor Furniture
Photo Credit, Amy Stone, OSU Extension 


Earlier this year, applications were received from residents and/or communities where gypsy moth caterpillars had made their presence know in 2018. The Ohio Department of Agriculture (ODA) received the applications and surveyed each area to determine if certain qualifications where met that would allow for treatments to manage populations to protect trees from the next generation. The application deadline is September 1 of the year prior to when the actual application will be made. For example, the blocks that will be treated in 2019, the application was due on September 1, 2018. To be considered for treatment by ODA in 2020, the deadline will be September 1, 2019. 


Qualifications include: 

  • Be located in a county that has been designated quarantine for gypsy moth by ODA (see map below).
  • Be no less than 50 contiguous acres.
  • Have a tree canopy that covers no less than 50 % of the block.
  • Consist of at least 35% tree species either susceptible or resistant to gypsy moth.
  • Have an egg mass count of at least 250 egg masses per acre for residential forested areas or 1000 egg masses per acre for uninhabited forested areas.
  • Receive a favorable assessment from the Ohio Department of Natural Resources and the United States Fish and Wildlife Service.


Ohio's Gypsy Moth Quarantine


Below is a list of scheduled 2019 Gypsy Moth Open Houses provided by ODA. The information listed includes the open house date and time, county or counties where the treatment blocks are located, the name of the of the treatment block(s), the treatment being made in that particular block and the location including the address where the open house will take place. You will notice that on some evenings, two different open houses will be held on the same night. 


Monday, February 4, 2019  (6pm – 8pm)

Hocking, Perry Counties                                                                     

Rockbridge MD, New Straitsville MD Blocks

Hocking Soil & Water Conservation Office – Conference Room

148 North Homer Avenue (Fairgrounds)

Logan, OH


Tuesday, February 5, 2019  (6pm – 8pm)

Licking County                                                                                       

Glenford MD, Granville MD, Hickman MD, Toboso MD, Granville Btk, Newark Btk, Fredonia Btk, Hickman Btk, Utica Btk Blocks

Village of Granville Office

141 East Broad St.

Granville, OH

Franklin County                                                                                   

Northwest Columbus MD Block

Columbus Park of Roses – Whetstone Shelterhouse

3923 North High Street

Columbus, OH


Wednesday, February 6, 2019  (6pm – 8pm)

Morgan, Perry, Muskingum Counties                                                 

Reinersville MD, Reinersville Btk, Crooksville MD, Deavertown Btk Blocks

OSU Extension Office – Morgan County

155 East Main St. (Room 325)

McConnelsville, OH

Licking County                                                                                      

Glenford MD, Granville MD, Hickman MD, Toboso MD, Granville Btk, Newark Btk, Fredonia Btk, Hickman Btk, Utica Btk Blocks

OSU Extension Office

771 East Main St.

Newark, OH


Thursday, February 7, 2019  (6pm – 8pm)

Muskingum, Guernsey, Noble Counties                                                 

Cumberland MD, Cumberland A Btk, Cumberland B Btk Blocks

Cumberland Volunteer Fire Department

444 West Main St.

Cumberland, OH

Marion County                                                                                     

Marion East A Btk, Marion East B Btk, Marion East C Btk, Marion East MD Blocks

Marion Municipal Airport

Terminal Building

1530 Pole Lane Rd.

Marion, OH


Monday, February 11, 2019  (6pm – 8pm)

Lucas County                                                                                        

Holland Btk Block

The Lodge at Strawberry Acres Park

950 South McCord Rd.

Holland, OH

Lucas County                                                                                        

Sylvania A Btk, Sylvania B Btk Blocks

Sylvania Township Offices

4927 North Holland Sylvania Rd.

Sylvania, OH


Tuesday, February 12, 2019  (6pm – 8pm)

Fulton County                                                                                                                                   

Lyons A Btk, Lyons B Btk, Wauseon A Btk, Wauseon B1 Btk, Wauseon B2 Btk, Wauseon B3 Btk, Wauseon B4 Btk, Cox A Btk, Cox B Btk Blocks

OSU Extension Office – Fulton County

8770 State Route 108

Wauseon, OH

Lucas County                                                                                        

Alexis Btk, Copland Btk, Kenmore Btk, Longfellow, Ottawa Park Btk Blocks

Walbridge Park Shelter House

2801 Broadway St.

Toledo, OH


Wednesday, February 13, 2019  (6pm – 8pm)

Fulton / Lucas Counties                                                                     

Swanton Btk, Valleywood Btk Blocks

Swanton Village Hall

219 Chestnut St.

Swanton, OH

Lucas County                                                                                        

Alexis Btk, Copland Btk, Kenmore Btk, Longfellow, Ottawa Park Btk Blocks

Greenwood Park Shelter House

6150 Jackman Rd.

Toledo, OH


Thursday, February 14, 2019  (6pm – 8pm)

Lucas County                                                                                        

Alexis Btk, Copland Btk, Kenmore Btk, Longfellow, Ottawa Park Btk Blocks

Division of Parks, Recreation and Forestry Adm. Building - Ottawa Park

2201 Ottawa Parkway

Toledo, OH

Wood County

Cygnet MD Block                                                                                               

Village of Cygnet

325 Front Street

Cygnet, OH


Tuesday, February 19, 2019  (6pm – 8pm)

Cuyahoga County                                                                                

Amber Lane Btk Block

Brecksville Community Center

1 Community Dr.

Brecksville, OH


Wednesday, February 20, 2019  (6pm – 8pm)

Stark County                                                                                         

North Canton Btk Block

Greentown Fire Department

Community Room

10100 Cleveland Ave. NW

Uniontown, OH

Hancock County                                                                                   

Arcadia MD, Arcadia A Btk, Arcadia B Btk Blocks

Burgeman Lodge

Riverbend Recreational Area

16618 Township Road 208

Findlay, OH


Thursday, February 21, 2019  (6pm – 8pm)

Erie County                                                                                           

Vermilion A Btk Block

St. Matthew Evangelical Lutheran Church

15617 Mason Rd.

Vermillion, OH

Seneca County                                                                                     

Tiffin North Btk Block

Tiffin City Hall

Basement Training Room

51 East Market Street

Tiffin, OH


Monday, February 25, 2019  (6pm – 8pm)

Hardin, Union, Marion Counties                                                                  

LaRue A MD, LaRue A Btk, LaRue B Btk, Larue C MD Blocks

Hale Township Hall

206 South West St.

Mt. Victory, OH

Lorain County                                                                                       

Findlay SP A, Findlay SP B Blocks

Findlay State Park – Nature Center

25381 State Route 58

Wellington, OH


Tuesday, February 26, 2019  (6pm – 8pm)

Allen County                                                                                         

Cairo MD Block

Allen County Fairgrounds – Red Cross Room

2750 Harding Highway

Lima, OH

Wyandot County                                                                                                                   

Meeker MD, Meeker Btk Blocks

Marseilles Volunteer Fire Department – Community Room

20461 State Route 37

LaRue, OH



The following treatment blocks will not be holding public open houses due to their small size and very low population being affected:

Mulga MD – Jackson County

Wapakoneta Btk – Auglaize County

Antwerp Btk – Paulding County

Dresden MD – Muskingum County            



Residents may contact the ODA Gypsy Moth Program directly by phone (614-728-6400), e-mail (plantpest@agri.ohio.gov) to have any questions answered. 


Additional posts on BYGL will be made as we near egg hatch, as well as optimal timing of treatments.


Gypsy Moth Caterpillars at Egg Hatch
Photo Credit, Amy Stone, OSU Extension



Aerial Application for Gypsy Moth
Photo Credit, Amy Stone, OSU Extension


Stay tuned for more information.