You may contact your local cooperative extension office to determine the correct timing of the Andersons 5-5-25 Fertilizer with Barricade Herbicide application as this will vary greatly from region to region. This division of the local university is available for homeowners to assist with disease identification, weed control, soil analysis, active ingredient or product recommendations as well as the best time to apply.
Pre-emergents are best applied before weed seeds germinate, and for spring that is typically around 55 degrees for most.
Andersons 5-5-25 Fertilizer with Barricade Herbicide is not safe to use on your newly plugged turf. The turf must be well-established - usually mowed at least 2-3 times - before you can apply this or other pre-emergent herbicides to it.