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Bob from Newberry, Florida writes

How often should I apply Talstar Xtra Granules? How soon can I apply Southern Ag Atrazine weed killer?

Grass is predominantly St Augustine. I want to treat for bugs 1st, then follow-up with a weed killer for St Augustine.


There is not a waiting period between application of insecticides and herbicides unless the product label expressly prohibits it. Talstar XTRA generally lasts 60-90 days, depending on pest pressure. You can view more tips in our Warm Season Turf Guide.

Answer last updated on: 02/15/2017

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