Knowledgebase
Mesotrione questions #849456
Asked September 11, 2023, 1:45 PM EDT
Ramsey County Minnesota
Expert Response
So, if your new seed is growing well before the lilacs bloom (lilac bloom is the marker for putting down pre emergent) preemergent can be applied.
Tenacity is a brand name for Misotrione, their might be others.*
https://extension.umn.edu/yard-and-garden-news/controlling-crabgrass-your-lawn
https://extension.umn.edu/yard-and-garden-news/controlling-crabgrass-your-lawn
https://turf.umn.edu/news/spring-preemergent-applications-crabgrass
*
From Wikipedia
Brands
By international convention and in many countries the law, pesticide labels are required to include the common name of the active ingredients. These names are not the exclusive property of the holder of any patent or trademark and as such they are the easiest way for non-experts to refer to individual chemicals. Companies selling pesticides normally do so using a brand name or wordmark which allows them to distinguish their product from competitor products having the same active ingredient. In many cases, this branding is country and formulation-specific so there can be multiple brand names for a given active ingredient. Mesotrione may be pre-mixed with other herbicides to provide more complete weed control. For example, Acuron is the name used by Syngenta for a mixture containing bicyclopyrone, atrazine and S-metolachlor in addition to mesotrione. Brand names for mesotrione include Callisto, Instigate, Meristo, Resicore and Tenacity. Suppliers and brand names in the United States are listed in the National Pesticide Information Retrieval System.[25]