my lawn care company just applied my early spring application. they say that it was a mixture of NITROGEN, STONEWALL PRE-EMERGENT, & 3-WAY WEED CONTROL......all this was in the form of a LIQUID.... for the life of me I can't find a label for this Stonewall... I wanted to see if I could find any information about HOW SOON AFTER THIS APPLICATION can I ***TRY*** to overseed for fescue........ I have some yellow patches that were MY FAULT from using Round Up so I only have to see small circular areas....... will this Stonewall pre-emergent prevent my fescue seeds from germinating...? will i just have to suffer with those yellow dead patches until the fall when I can really overseed the heck out of the yard???