Pre-emergent question

Though pre-emergent won’t help with VBW or nutsedge, it will greatly assist with numerous cool season weeds - there is no downside to using it - I’d apply if I was you as you are trying to get your lawn back in shape. Not a waste at all as there plenty winter weeds seeds that will begin to germinate at soil temperatures of 70 F.

Also, planning to cut grass tomorrow afternoon once the sun has had a chance to soak up most of the water from the storm. Spread after the cut?

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That’s what I thought, thank you. In Baton Rouge, which pre-emergent would you suggest? I’m assuming I should spread this weekend. St. Aug and Bermuda, for the most part, in my yard.

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I’d wait until the last week of Sept-first week of Oct. It’s a bit early to apply it now. If you are fairly new to this I’d suggest either Prodiamine or Dimension - effective, good value pre-emergents. Some of us use Specticle which is very expensive, upfront cost, as it controls some problem weeds that we have in our lawns that Prodiamine & Dimension won’t - Doveweed for example. Some others use Simazine.

You can use all these on the 4 warm season grasses.

Since you are in Baton Rouge, Site One Landscape Supply in the Industrialplex has good pricing on granular Prodiamine (LESCO Sonewall) & Dimension (LESCO Dimension). But you can also buy these at larger retail garden centers in town, Cleggs & Louisiana Nusery come too mind, but there are others.

Current soil temp is 79° and will like warm slightly over the next couple of weeks.
For BR, the ten year average shows the first dip below 70° on 19 October.

You’ll be fine waiting until first week of October.

You gotta think long term with pre emerge
Results come from repeated applications fall and spring over a few seasons
It's worth it

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When is the timing on the late winter pre-emergent? I always seem to miss that one.

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When soil temperature warms to 55 F, which for south LA is usually the first two weeks of Feb - by Valentine’s Day.