You need to post your location (like stupid Fritz did) and the type of grass you are trying to grow. Those are two important points that must be known.
Fits, call Ryan Lawn and Tree. Those guys are top notch.
AJ, seed during a warm stretch in Feb or March. Get some more grass growing to assist the process next fall. Yes, you missed the optimum time for NE KS over seeding sept/October, but if you have a week stand, you can still get it established late winter so that the majority of it will survive the pre emergent herbicide. Do not skip the pre emergent. Get it out on time. Call your local extension service :ksugrad: for proper timing.
Herr: anything with 2,4-d or salt of dicamba will setback or kill that henbit. Spray in the middle of a 4-5 day stretch of 60 degree days. If it is off by a couple of degrees or a day, don't worry. You will slow it down enough that it won't impact your lawns green up in the spring. Winterize next year.
Edit: 5:7 on a Wednesday night. You get what you pay for.
Gonna win 'em all! (using Tapatalk)