Pre-emergent timing

Where are you? BR have high likelihood for rain every day the next 7 days. I'm not sure if you can wash out pre-emergent, ronk/Craw might know if that's possible even if it's consistent light showers. The last two weeks seemed like the prime time to do so.

I asked about putting the cocktail down after pre-emergent and was told 24 hours was fine. I don't think it'll hurt to attempt to put down Prodiamine now but as the first reply said, you likely missed the window for most.

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Is it too late to put down Prodiamine in St. Augustine? Also, Can it be mixed with winter weed cocktail and applied together?

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I don’t know if they can be mixed, maybe ronk can answer. As stated, though you’ve missed the optimal window for pre-emergent application not all weed seed seeds have germinated so I’d apply pre-emergent. Additionally, I agree if you have a crabgrass issue, Dimension pre-emergent does have have post-emergent activity on seedling crabgrass not provided by Prodiamine.

Also remember the atrazine does have some pre-emergent activity as well as post-emergent activity.

If you mean the same day, yes. If you mean mix all 3 in the spreader and make one pass around the yard then no.

Is the Lesco Stonewall 0-0-7 from Lowe’s the correct product to throw out right now, even if it’s probably to late to catch all the weeds that have germinated already?

I plan on putting down Lesco Stonewall tomorrow. Do I need to water it in or can I wait for the forecasted rain? Any issues with washing out?