Johnson grass?

[coop2564]

What is best spray to kill Johnson grass? I have sprayed roundup grass killer from Walmart on it twice, and nothing.

[M16]

Grazon

[RMW]

Yes Roundup will smoke Johnson grass, Grazon is a broadleaf weed killer and won’t touch it. Let’s see a pic of the jug from Walmart

[Nate Riley]

You may have a defective jug of round up if it didn't work LOL

[7sdad]

Every time I've tried to use Roundup it ends up looking like I put fertilizer on it.

[coop2564]

Yes Roundup will smoke Johnson grass, Grazon is a broadleaf weed killer and won’t touch it. Let’s see a pic of the jug from Walmart

Roundup Dual Action Weed & Grass Killer Plus 4 Month Preventer, 1 gal. - Walmart.com

[coop2564]

You may have a defective jug of round up if it didn't work LOL

Twice?

[Lincoln Hawk]

Roundup in the fall months is key. That's when they're translocating goodies to the roots.

[eastover53]

Roundup Dual Action Weed & Grass Killer Plus 4 Month Preventer, 1 gal. - Walmart.com

Get some real glyphosate. That stuff that you bought is NOT actually Roundup. No glyphosate in it. Go to Tractor Supply or your local coop and buy it.

[BLACKFINTURKEY]

Outrider 1.33oz/ac

[Walker]

Get some real glyphosate. That stuff that you bought is NOT actually Roundup. No glyphosate in it. Go to Tractor Supply or your local coop and buy it.

Easy enough to check the ingredients.

[BrianL]

Were are you trying to kill the johnsongrass, yard, pasture, hay meadow?

[Mudslinger]

RM43 works pretty good but it will kill everything!

[SabreKiller]

RM43 works for me. Kills the snot out of stuff.

[RMW]

Roundup Dual Action Weed & Grass Killer Plus 4 Month Preventer, 1 gal. - Walmart.com

I’m thinking that stuff is for killing little small grass and weeds coming up between the cracks on concrete driveway. Need to get some real glysophate at ag store