Overseeing after post emergent broadleaf treatment

grass4gas

LawnSite Bronze Member
The biggest concern is whether or not you’re using low volume out of a machine or dragging a hose and flooding the lawn with 2 to 3 gallons of liquid per thousand square feet. Low-volume means you’re getting more product just on the leaf surface and not the soil, where as a hose end sprayer means you’re getting more not only on the leaf surface but obviously the soil as well.

It is the soil that you have to be concerned with in making sure the product has moved out of it so you would then be able to seed. Most manufacturers will tell you to wait 2 to 3 weeks to be safe.

On the other hand, I use low volume when spraying weeds. I have typically only waited a week to 10 days maximum before seeding just to make sure the weeds have died. And if I’m only needing to spot spray, I will spot spray the few weeds and seed right then and there.
 
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Westbrooklawn

LawnSite Senior Member
Location
Durham, NC
The biggest concern is whether or not you’re using low volume out of a machine or dragging a hose and flooding the lawn with 2 to 3 gallons of liquid per thousand square feet. Low-volume means you’re getting more product just on the leaf surface and not the soil, where as a hose end sprayer means you’re getting more not only on the leaf surface but obviously the soil as well.

It is the soil that you have to be concerned with in making sure the product has moved out of it so you would then be able to seed. Most manufacturers will tell you to wait 2 to 3 weeks to be safe.

On the other hand, I use low volume when spraying weeds. I have typically only waited a week to 10 days maximum before seeding just to make sure the weeds have died. And if I’m only needing to spot spray, I will spot spray the few weeds and seed right then and there.
This makes sense and is probably the way I will go. Pump up sprayer and spot mist just the weeds. Should be good to seed within two weeks.
 

DA Quality Lawn & YS

LawnSite Fanatic
Location
Rochester, MN
I go 3 weeks from ride-on app to seeding, as a general rule.
 

That Guy Gary

LawnSite Gold Member
Location
SW Idaho
If it's tall fescue 24d and quinclorac can be sprayed whenever. Probably more, those are two I remember from the results of studies done on it though.
 

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