Corn Speedwell Treatment Plan - Ask Extension
I have corn speedwell in my lawn and I was wondering if someone could recommend a treatment plan based on products. Most research I've seen says to t...
Knowledgebase
Corn Speedwell Treatment Plan #563393
Asked May 21, 2019, 9:51 PM EDT
I have corn speedwell in my lawn and I was wondering if someone could recommend a treatment plan based on products. Most research I've seen says to treat with a pre and post emergent products but not much else. Any insight is appreciated and my hope this is something I can do myself. Thank you
Pottawattamie County Iowa
Expert Response
Corn speedwell is a winter annual. Seeds germinate in early fall. Plants overwinter and then flower and go to seed in spring. Corn speedwell usually dies by mid-summer.
The most effective compound on corn speedwell is triclopyr. Ortho
Weed B Gon Chickweed, Clover & Oxalis Killer For Lawns is a widely sold
product that contains triclopyr. An application in early to mid-November should control the small seedlings.
Thank you. I appreciate you taking the time to respond.
