How long does it take for Roundup to stop penetrating the area sprayed in my lawn--?
Question:I sprayed Round up Weed and Grass killer on my lawn--I thought it was only weed killer--I killed all of my grass--its been three weeks--I water the lawn daily--and I have shuffled about two incheds of the dirt a few times--when can I put more grass seed down--what else can I do to save my lawn--I don't have much time in Pittsburgh; summer comes and goes really quick. HELP!
Answers:
You can replant usually after a couple of weeks and in as soon as 8-10 days. If it has been 3 weeks since treatment then you are good to go. Roundup is biodegradable. Before reseeding make sure you loosen the dirt or use some topsoil so the seed will take root.
Roundup has been known to have a residual agent to continue killing off weeds etc, Read the information on the container and contact roundup and ask them to help you.
Round Up only works through the leaves. You could have seeded right after spraying and it would have been O.K. Farmers do it that way all of the time.
I hear you have a brown thumb instead of a green. Round up as you know now kills all plants in the yard. Putting dirt on top will not deterorate the power of round up. If you would have let it be-- like the directions on the bottle to read. After 30-45 days you can reseed. Watering and the run off will kill other plants. Turn the soil with a rotor tiller and rolling -- flatten out the lumps. I think you want to regrow Kentucky Blue. It is easier to purchase sod. rather than start new growth. Seeds have a lot of weed in the package. Besides in 30 days you will have a nice lawn again. The cracks will grow in next year.
Roundup sucks. It has a residual of about 10 days.
From what I have read, glyphosate which is the active ingredient in Roundup has a 45 day half-life, meaning it takes 45 days for half of it to degrade. You did kill your plants though, which probably broke down a whole lot of it. As a pesticide regulator, may I please remind you to READ THE LABEL. The label would tell you how to apply it, how it works, what it works on, when you can spray again, when you can plant again, all that. It should be on the label. Anywho, my take home message that you illustrated quite nicely is, READ THE LABEL.
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