Pesticide Use

The City strives to be a good steward of its natural environment by continually exploring innovative, environmentally sensitive and cost-effective strategies for pest management. 

The objective of Rockville’s pest management policy is to manage pests that may cause harm or threaten the health or functioning capability of an area while minimizing risk to human health and the environment. To accomplish this the City uses the principles of Integrated Pest Management (IPM) which combines multiple strategies and techniques for pest control such as monitoring, improving cultural practices, conserving and introducing beneficial biological organisms, mechanical methods, and the use of organic and inorganic chemicals.

Pesticide Signs 2022

On-Site Signage

On the day of application, staff will post on site signage per the Maryland Department of Agriculture (MDA) Pesticide Section. This includes posting signs at major entrances and in the general vicinity of the application for 48 hours after the application. 

The below table includes a schedule of upcoming pesticide applications by staff/contractors that are certified and registered with the Maryland Department of Agriculture.* The list is updated to provide at lease one week notice for applications. 

Scheduled Pesticide Application

LocationPlanned Application Date RangeArea to be treatedApplication Details
Courthouse Square Park29/20/2022-9/23/2022Mulched Planting BedsSpot treat weeds in planting beds throughout park (Prosecutor Pro)
Mattie J.T. Stepanek Park9/20/2022-9/23/2022Mulched Planting BedsSpot treat weeds in planting beds throughout park (Prosecutor Pro)
King Farm Park9/20/2022-9/23/2022Mulched Planting BedsSpot treat weeds in planting beds throughout park (Prosecutor Pro)
Fallsgrove Village Green9/20/2022-9/23/2022Mulched Planting BedsSpot treat weeds in planting beds throughout park (Prosecutor Pro)
Elwood Smith Park9/20/2022-9/23/2022Mulched Planting BedsSpot treat weeds in planting beds throughout park (Prosecutor Pro)
College Gardens Park9/20/2022-9/23/2022Mulched Planting BedsSpot treat weeds in planting beds throughout park (Prosecutor Pro)
Rockville Swim Center9/20/2022-9/23/2022Mulched Planting BedsSpot treat weeds in planting beds throughout park (Prosecutor Pro)
Rockville Senior Center9/20/2022-9/23/2022Mulched Planting BedsSpot treat weeds in planting beds throughout park (Prosecutor Pro)
Chestnut Lodge Park9/20/2022-9/23/2022Mulched Planting BedsSpot treat weeds in planting beds throughout park (Prosecutor Pro)
Phillis Kavanagh Park9/20/2022-9/23/2022Mulched Planting BedsSpot treat weeds in planting beds throughout park (Prosecutor Pro)
Croydon Creek Park9/20/2022-9/23/2022Mulched Planting BedsSpot treat weeds in planting beds throughout park (Prosecutor Pro)
Lincoln Park Community Center9/20/2022-9/23/2022Mulched Planting BedsSpot treat weeds in planting beds throughout park (Prosecutor Pro)
Twinbrook Recreation Center9/20/2022-9/23/2022Mulched Planting BedsSpot treat weeds in planting beds throughout park (Prosecutor Pro)
Beall Dawson Park8/22/2022-9/22/2022Curbs, sidewalks and tree pitsSpot treat weeds in & around cracks/edges of these areas (Roundup Pro)
City Hall8/22/2022-9/22/2022
Curbs, sidewalks and tree pits
Spot treat weeds in & around cracks/edges of these areas (Roundup Pro)
Civic Center Park8/22/2022-9/22/2022

Curbs, sidewalks and tree pits
Spot treat weeds in & around cracks/edges of these areas (Roundup Pro)
Friends Park8/22/2022-9/22/2022

Curbs, sidewalks and tree pits
Spot treat weeds in & around cracks/edges of these areas (Roundup Pro)
James Monroe Park8/22/2022-9/22/2022

Curbs, sidewalks and tree pits
Spot treat weeds in & around cracks/edges of these areas (Roundup Pro)
Karn Park8/22/2022-9/22/2022

Curbs, sidewalks and tree pits
Spot treat weeds in & around cracks/edges of these areas (Roundup Pro)
King Farmstead & Mattie Stepanek Park8/22/2022-9/22/2022


Curbs, sidewalks and tree pits
Spot treat weeds in & around cracks/edges of these areas (Roundup Pro)
Mary Trumbo Park8/22/2022-9/22/2022
Curbs, sidewalks and tree pits

Spot treat weeds in & around cracks/edges of these areas (Roundup Pro)
Millennium Garden Park8/22/2022-9/22/2022


Curbs, sidewalks and tree pits
Spot treat weeds in & around cracks/edges of these areas (Roundup Pro)
Peg Sante Park8/22/2022-9/22/2022


Curbs, sidewalks and tree pits
Spot treat weeds in & around cracks/edges of these areas (Roundup Pro)
Veterans Park8/22/2022-9/22/2022


Curbs, sidewalks and tree pits
Spot treat weeds in & around cracks/edges of these areas (Roundup Pro)
Memory Walk8/05/2022-9/05/2022Curbs, sidewalks and tree pits
Spot treat weeds (Roundup Pro)
Dogwood Park8/29/2022-9/7/2022Dirt infields and warning track, around athletic courts and benches, park curbs, sidewalks, tree and flower bedsSpot treat areas (Roundup)
Broome Athletic Park9/6/2022-9/8/2022Dirt infield and warning trackSpot treat areas (Roundup)
Horizon Hill8/29/2022-9/7/2022
Park curbs, sidewalks, tree and flower beds, around athletic courts and benchesSpot treat areas (Roundup)
Potomac Woods Park9/8/2022-9/9/2022Edge of SWM area and behind 11 Arlive Ct.Spot treat weeds (Roundup)
Dawson Farm9/7/2022-9/14/2022Wood chip area near parking lotSpot treat weeds (Roundup)
Thirty Oaks Park9/12/2022-9/16/2022Park areaTreat invasive within the park (Roundup)

North Street Park9/12/2022-9/16/2022

Fence lineSpot treat weeds (Roundup)

Woottons Mill Park9/12/2022-9/16/2022
Park areaSpot treat poison ivy (Roundup)


Unity Bridge9/12/2022-9/16/2022Curbs, pavers sidewalks around bridgeSpot treat weeds (Roundup)
Watkins Pond (SWM)9/12/2022-9/16/2022
Area around stormwater pond.
Spot treatment (Pathfinder and Garlon 3A) for non-native invasive Ailanthus altissima. 
Upper Watts Branch9/12/2022-9/16/2022
Stream restoration areas. Spot treatment (Garlon 3A, Rodeo, and Roundup Custom) for non-native invasive plants. 


*Rockville staff makes every effort to notify the community on this webpage when a pesticide application is scheduled in a public area. Dates of applications may change or be canceled due to weather; also, occasional emergency applications may be needed.