What pre-emergent can I use to treat Poa Annua in a southern lawn?
Check with your local garden centers for herbicides sold in your area.
You can also talk with your County Extension Office for any guidance in pre emergence applications in your region for this weed.
Here are some links with more information.
https://www.gardeningknowhow.com/extension-search/
https://www.gardeningknowhow.com/plant-problems/weeds/poa-annua-control.htm
I have read that we should use pre-emergent herbicide to kill poa annua--but I cannot find which one to purchase for this purpose. We have an infestation of poa annua. Pulled it out last year, added new dirt and reseeded. But it is back and taking over our yard. What chemicals should be apply?
These articles should help:
http://ipm.ucanr.edu/PMG/PESTNOTES/pn7464.html
https://www.gardeningknowhow.com/plant-problems/weeds/poa-annua-control.htm