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Zoysia grass removal - root killer?

post #1 of 8
Thread Starter 
Many years ago I stripped my yard of Zoysia grass. SInce then small amounts have repopulated, primarily on the devils strip in front of the house. and I want rid of it.



My plan is to shovel the zoysia grass out, kill the roots throw down some new top soil and reseed but can't remember what to use to kill remaining roots. As I recall I used something that required me to wait 4 days before I put down more top soil and reseed.



Most grass killers I find now require four months to replant.



Suggestions on what to use to kill remaining roots after I dig?
post #2 of 8
I vote Roundup. Problem is you won't be able to plant for a while. Spray it on the healthy grass (not the dug up roots). Give it three weeks, re-apply if you see new growth and you should be able to till the area and replant in about 6 weeks total.
post #3 of 8
Thread Starter 
Quote:
Originally Posted by fishn808 View Post
I vote Roundup. Problem is you won't be able to plant for a while. Spray it on the healthy grass (not the dug up roots). Give it three weeks, re-apply if you see new growth and you should be able to till the area and replant in about 6 weeks total.



I have Roundup. Thanks. The label says don't use where you plan to replant within four months! I was hoping for a more immediate replant. Wish I could remember what I used last time. Ripped the stuff out one weekend, replanted the next.
post #4 of 8
Round up (anything with glyphosate in it) is your best choice.

Zoysia is a really vigorous spreading species that is persistent. I would spot spray it, wait a week then spot spray any still green plants again. Wait a couple days after your second spray and then over-seed.

Only spray areas you want to be dead, roundup will kill most all green leafy plants.

The problem is Zoysia is a warm season grass, so it is late to come out of dormancy here in the north and it needs to be actively growing for the spray to work, so you are not wasting your money.

Straight roundup (glyphosate) can be sprayed and seeded over the next day. There are a lot of different formulations out there now that have different additives for different effects.

If you read the label of the bottle you have and it states to wait four months it may be a formulation of roundup that has a pre-emergent herbicide in it besides glyphosate. Read the label and make sure what you spray doesn't have a pre-emergent in it because that is what prevents you from seeding right away.

Look for a formulation of roundup or glyphosate that has no pre-emergent properties.

I have redone a lot of lawns using roundup to kill a lot of the nasties and have been able to reseed the following day after a spray.
post #5 of 8
Thread Starter 
Quote:
Originally Posted by Micropteris View Post

Look for a formulation of roundup or glyphosate that has no pre-emergent properties.

I have redone a lot of lawns using roundup to kill a lot of the nasties and have been able to reseed the following day after a spray.


Will do, thanks. That is some nasty grass. The last time I dug, tilled, sprayed, put down top soil then some mushroom soil then seeded. Over the years it crept back.

The reason I am getting rid of it right now is that it stands out so well in PA at this time of year I am able to see much of it.
post #6 of 8
i would also vote for roundup

reseed in the fall, labor day at the earliest

or you could spray the round up and give it a chance to work

when the zoysia sleeps with the fishes, patch the area with pieces of sod

use the double cut method for a snug fit:


lay the sod over the area to be patched- cut straight down with a sharp, sturdy spade- through the new sod and into the area to be patched

move the new sod out of the way and grub/dig out the zoysia- fluff the soil up- add some compost and maybe some "soil moist" granules

plop the new sod in place, tamp it down and water it in

remember- sod doesn't die, you kill it- make sure you keep it watered

in the fall you can overseed it with a fescue mix
post #7 of 8
my vote would be for muratic acid, that would kill anything you want, it'll never come back,
post #8 of 8
Thread Starter 
Quote:
Originally Posted by gray gables View Post
my vote would be for muratic acid, that would kill anything you want, it'll never come back,


Will it help with the dogs peeing on my bushes? I dug out the grass for the most part and sprayed roundup. So I don't have to look at dirt until fall, I'll wait a couple weeks, then add some soil and a mixture of grass seed and maybe potting or mushroom soil.
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