Weed taking over my yard - Ask Extension
This weed is showing up almost everywhere in my lawn. Can you tell me what the weed is and if there is a spray that I can use that would be effective ...
Knowledgebase
Weed taking over my yard #867197
Asked May 06, 2024, 10:19 AM EDT
This weed is showing up almost everywhere in my lawn. Can you tell me what the weed is and if there is a spray that I can use that would be effective in getting rid of it?
Thank you
Clinton County Michigan
Expert Response
This appears to be corn speedwell.
https://www.canr.msu.edu/news/spring-blooming-lawn-and-garden-weeds
Corn speedwell should be effectively controlled with one of the “3-way” broadleaf herbicides for turf, such as Weed-B-Gone Lawn Weed Killer, Trimec, or Bayer Advanced Lawn Weed Killer for Lawns. These products contain a “3-way” mixture of dicamba, 2, 4-D, and quinclorac and can be found in most lawn and garden centers (Lowe’s, Home Depot, Wal-Mart, TSC, etc.). You can also try Ortho Weed B Gon Chickweed, Clover, and Oxalis killer with the active ingredient triclopyr. This works on hard to control broadleaf weeds.
A spring application should be applied as soon as possible to control corn speedwell before seeds are produced. An application will be effective if applied during days with a temperature of more than 50 degrees. A fall application may be warranted to control those plants that emerge this fall. The reason for the invading corn speedwell is probably a result of poor quality, thin turf due to poor drainage, shade, improper grass species, pH imbalance, fertility problems, soil structure problems, drought, etc.
https://www.canr.msu.edu/news/spring-blooming-lawn-and-garden-weeds
Corn speedwell should be effectively controlled with one of the “3-way” broadleaf herbicides for turf, such as Weed-B-Gone Lawn Weed Killer, Trimec, or Bayer Advanced Lawn Weed Killer for Lawns. These products contain a “3-way” mixture of dicamba, 2, 4-D, and quinclorac and can be found in most lawn and garden centers (Lowe’s, Home Depot, Wal-Mart, TSC, etc.). You can also try Ortho Weed B Gon Chickweed, Clover, and Oxalis killer with the active ingredient triclopyr. This works on hard to control broadleaf weeds.
A spring application should be applied as soon as possible to control corn speedwell before seeds are produced. An application will be effective if applied during days with a temperature of more than 50 degrees. A fall application may be warranted to control those plants that emerge this fall. The reason for the invading corn speedwell is probably a result of poor quality, thin turf due to poor drainage, shade, improper grass species, pH imbalance, fertility problems, soil structure problems, drought, etc.
