How long do I have to wait...

[Luck e 1]

I am going to put some spray weed killer (ortho weed be gone plus crab grass).

I will put it down on Friday.

My question is how long I need to wait before I put a general fertilizer down?

I noticed it looks like it may rain a few days next week (assuming they are correct and I thought the day before (monday) would be a good day to put down the fertilizer so it can soak in well without me having to water a lot.

Is this too much on my lawn in a short time?

[MuleShack]

You can put your granular fertilizer down the same time you spot spray your weeds.

The important thing is to leave your grass grow for 4-6 days before spraying the weed killer to have the weeds more exposed so they soak up more of the herbicide. Then wait 24-48 hours to mow after spraying. The fertilizer will take effect eventually when it rains with out interfering with the spray.

[Luck e 1]

Thanks for the help...

It is more than just a spot spray...it is a complete coverage spray that you spray on your entire lawn.

That may not even matter...but I just want to clarify.

[MuleShack]

Same thing....

[fishersofmen]

Yea you are fine any time. The majority of the time we spray our customers lawns it is with a weed killer and liquid fertilizer mixed together, and a liquid fert. is much stronger and more quickly absorbed than a granular. Or in the summer time we often broadcast spray weed control and then do a granular fert at the same time......nothing to worry about.