Originally Posted by
haystack
I would spread and till in the fertilizer right before planting. If you are not planning on tilling then spreading before or after would not make much difference, it's not going to affect the spray and the spray won't affect the fertilizer. I just wouldn't won't to walk through the wet spray on the weeds, while spreading the fertilizer.
As mentioned, if you are using Hi-Yield killzall which is a generic form of Glyphosate, 2 hours is all that's needed before it rains. If this is what you're using why would you weed it clean first?
EDIT: Reply was posted regarding Killzall while I was posting.
I haven't decided yet if I'm going to till again or not. I might do it right before I plant. I'm planting Biologic Shot Plot (2 bags for a 1/4 acre) and may just broadcast it before a heavy rain. It says on the bag that all it needs is soil contact to germinate.
I'm going to weed it clean because like a moron I didn't herbicide the plot again after I limed it and the weeds exploded. They're very tall and very thick based. 4 of us are going to go pull them all out and throw them off to the side. If I sprayed them the herbicide wouldn't reach the stuff at the bottom because of how tall and thick it is right now. And I don't want to mow or weed eat it because then it would all be on the soil I'm going to plant.