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
Anderson Park5/30/23-6/2/23Tree pits, planting beds, sidewalksPost-emergent herbicide weed control - Prosecutor Pro
Beall Dawson House5/8/23-5/29/23Annual BedsPre-emergent weed control at time of planting - Snapshot
Calvin Park5/23/23-6/12/23Dirt infieldSpot treat weeds - Roundup Pro Max 
Chestnut Lodge Park5/30/23-6/2/23
Tree pits, planting beds, sidewalks
Post-emergent herbicide weed control - Prosecutor Pro
City Hall5/8/23-9/8/23
Roses in front of City Hall
 Weekly fungicide application to control diseases- Daconil
Civic Center Park5/8/23-9/8/23

Roses in Sundial GardenWeekly fungicide application to control diseases- Daconil
Civic Center Park5/8/23-5/29/23

Annual BedsPre-emergent weed control at time of planting - Snapshot
College Gardens Park
5/23/23-6/12/23Bermudagrass sand area - volleyball courtSpot treat weeds - Roundup

College Gardens Park

5/30/23-6/2/23

Tree pits, planting beds, sidewalks

Post-emergent herbicide weed control - Prosecutor Pro
Courthouse Square Park
5/8/23-5/29/23
Annual Beds
Pre-emergent weed control at time of planting - Snapshot
Courthouse Square Park

5/30/23-6/2/23


Tree pits, planting beds, sidewalks

Post-emergent herbicide weed control - Prosecutor Pro
Croydon Park5/30/23-6/2/23
Tree pits, planting beds, sidewalks
Post-emergent herbicide weed control - Prosecutor Pro
David Scull Park
5/23/23-6/12/23
Dirt infield
Spot treat weeds - Roundup Pro Max
David Scull Park

5/8/23-5/29/23
Annual Beds
Pre-emergent weed control at time of planting - Snapshot
Dogwood Ballfields 1, 2 & 3
5/23/23-6/12/23
Dirt infields and warning trackSpot treat weeds - Round Up Pro Max
Elwood Smith Park
5/8/23-5/29/23

Annual Beds
Pre-emergent weed control at time of planting - Snapshot
Elwood Smith Park6/5/23-6/19/23Dirt InfieldSpot treat weeds - Roundup 
Elwood Smith Park

5/30/23-6/2/23

Tree pits, planting beds, sidewalks
Post-emergent herbicide weed control - Prosecutor Pro
Elwood Smith Park
5/30/23-6/2/23

Tree pits, planting beds, sidewalks
Post-emergent herbicide weed control - Prosecutor Pro
Fallsgrove Park

5/8/23-5/29/23
Annual Beds
Pre-emergent weed control at time of planting - Snapshot
Fallsgrove Park
5/30/23-6/2/23

Tree pits, planting beds, sidewalks
Post-emergent herbicide weed control - Prosecutor Pro
Friends Park
5/8/23-5/29/23
Annual Beds
Pre-emergent weed control at time of planting - Snapshot
Glenora Park5/23/23-6/12/23
Dirt infieldSpot treat weeds - Roundup Pro Max
Hillcrest Park5/8/23-5/29/23

Annual Beds

Pre-emergent weed control at time of planting - Snapshot
Hungerford-Stoneridge Stormwater Management Pond 
5/8/23-5/12/23

Stormwater ponds and surrounding areas.Management of invasive cattails and bamboo - Roundup custom
Isreal Park6/5/23-6/19/23Dirt InfieldSpot treat for weeds with Roundup
James Monroe Park
5/8/23-5/29/23

Annual Beds

Pre-emergent weed control at time of planting - Snapshot
Karn Park5/8/23-5/29/23


Annual Beds


Pre-emergent weed control at time of planting - Snapshot
King Farm Park

5/8/23-5/29/23

Annual Beds

Pre-emergent weed control at time of planting - Snapshot
King Farm Park
5/30/23-6/2/23
Tree pits, planting beds, sidewalks
Post-emergent herbicide weed control - Prosecutor Pro
Legacy at Lincoln Park5/8/23-5/29/23

Annual Beds
Pre-emergent weed control at time of planting - Snapshot
Lincoln Park Community Center
5/8/23-5/29/23

Annual Beds


Pre-emergent weed control at time of planting - Snapshot
Lincoln Park Community Center
5/30/23-6/2/23

Tree pits, planting beds, sidewalks
Post-emergent herbicide weed control - Prosecutor Pro
Mattie J.T. Stepanek Park

5/8/23-5/29/23

Annual Beds

Pre-emergent weed control at time of planting - Snapshot
Mattie J.T. Stepanek Park


5/30/23-6/2/23


Tree pits, planting beds, sidewalks
Post-emergent herbicide weed control - Prosecutor Pro
Monument Park

5/8/23-5/29/23
Annual Beds
Pre-emergent weed control at time of planting - Snapshot
Monument Park
5/23/23-6/12/23
Dirt infields and warning track
Spot treat weeds - Roundup Pro Max
North Street Park5/8/23-5/29/23
Annual Beds
Pre-emergent weed control at time of planting - Snapshot
Peg Santee Park5/8/23-5/29/23
Annual Beds

Pre-emergent weed control at time of planting - Snapshot
Phyllis Kavanagh Park5/30/23-6/2/23
Tree pits, planting beds, sidewalks

Post-emergent herbicide weed control - Prosecutor Pro
Potomac Woods Park6/5/23-6/19/23Dirt InfieldSpot treat weeds - Roundup
Promenade Park5/8/23-5/29/23
Annual Beds


Pre-emergent weed control at time of planting - Snapshot
Rockville Swim & Fitness Center
5/30/23-6/2/23
Tree pits, planting beds, sidewalks
Post-emergent herbicide weed control - Prosecutor Pro
Senior Center Park
5/30/23-6/2/23
Tree pits, planting beds, sidewalks
Post-emergent herbicide weed control - Prosecutor Pro
Senior Center Park5/8/23-5/29/23
Annual Beds


Pre-emergent weed control at time of planting - Snapshot
Silver Rock Park5/8/23-5/29/23
Annual Beds

Pre-emergent weed control at time of planting - Snapshot
Twinbrook Community Recreation Center5/30/23-6/2/23

Tree pits, planting beds, sidewalks
Post-emergent herbicide weed control - Prosecutor Pro
Veterans Park
5/8/23-5/29/23

Annual BedsPre-emergent weed control at time of planting - Snapshot
Veterans Park

5/8/23-9/8/23

Roses around flag poleWeekly fungicide application to control diseases- Daconil
Village Green at Fallsgrove5/30/23-6/2/23
Tree pits, planting beds, sidewalks
Post-emergent herbicide weed control - Prosecutor Pro
Welsh Park
5/23/23-6/12/23

Dirt infields and warning track

Spot treat weeds - Roundup Pro Max
Woodley Gardens Park5/23/23-6/12/23
Dirt infields and warning track
Spot treat weeds - Roundup Pro Max

*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.