Pre-emergent herbicides form a residual barrier in the soil and must be applied before weed seed germination. Timing is important! Active ingredients of effective pre-emergent herbicides (Trade names vary as well as availability) that control crabgrass, foxtail and goose grass include:
benefin + trifluralin
In Jefferson County a pre-emergent herbicide should be applied on or before April 1st to be most effective.
For more detailed information including additional pesticides available to the homeowner, click on this link to UK’s Weed Control For Kentucky Home Lawns:
Read and follow all label instructions before you apply any pesticides.
Feel free to contact our office if you have other questions.
Let me know if I can help you further!
Jefferson County Cooperative Extension Service
810 Barret Ave
Louisville KY 40204