Product Q&A

Answer:

Barricade 4FL Pre-Emergent Herbicide (Prodiamine) & any other pre emergents must be used when soil temperatures are below 50 degrees. For assistance with timing, we would recommend reaching out to your local extension office for assistance or following our calendar. 
 
https://www.domyown.com/lawn-care-schedule-a-537.html
http://npic.orst.edu/pest/countyext.htm

Answer last updated on: 08/01/2022

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