I just sprayed today, and it’s supposed to rain in 2 days (and a few days in a row). I was hoping I could toss down the grass seed tomorrow before rain, but I wasn’t sure if that’s too soon, or if it matters with this particular chemical.
I’m not concerned about getting it perfect. If 10% of the seed I put down comes up and starts to spread over the years, I’d consider that a win. Every amount above that certainly welcome, but.
Can I over-plant grass seed a day after spraying Ortho Weed B Gon? If not, how long do I need to wait (and why)?
Weed-B-Gon starts working after just 10 hours, depending on the application method and weather conditions. After the first 10 hours weeds may start to wilt and yellow but it takes a further 1 – 2 weeks for the weeds to completely die off.
Ortho Weed-B-Gon takes approximately 24 – 78 hours to dry, depending on the weather conditions. Keep yourself, children and pets off the lawn until all the herbicide has evaporated.
Herbicides like Weed-B-Gon leave traces in the soil since their job is to attack weeds from their roots. These same chemicals may be safe for many already established grass types but it does stop new seedlings from germinating.
Weed-B-Gon Doesn’t Work. Why?
Weed-B-Gon takes about 14 days to work so wait at least two weeks to see if the first dose has had an effect. If there are no results after 14 days, it is possible to apply Weed-B-Gon for a second round.
Like most herbicides, there is an appropriate time to apply them. This is because the chemicals are more effective during specific stages of weed growth and during certain weather conditions.
If applied correctly, Ortho Weed-B-Gon starts taking effect after just 10 hours and kills off all weeds within 1 – 2 weeks. After 24 – 78 hours it is safe to step on lawn again, depending on how long it takes to evaporate.
If applied incorrectly, Ortho Weed-B-Gon can kill certain grass species. Weed-B-Gon is safe for use on many common lawn grass types like bermudagrass, bluegrass, fescues, zoysia grass and more. Check the bottle to make sure it is safe for your lawn grass.