Blue Marker Dye which can be safely and effectively used with RoundUp ?

Don’t you understand that spellcheck changes weeds to “we end”. Sorry about that.
 
Thank you, Gym. Yes, for six years I've applied Tenacity 3x/growing season. But the last two seasons even double strength applications made no difference, even though there was mild blanching of the entire grass. So I gave me this year not knowing of anything except Tenacity.

It is hoped that using a sod cutter will remove most or all of the dormant parts of Nimble and other enemies.
All I can say is, I hope that stuff never makes it into my lawn.
 
From what I read nibble weed is hard to control. Never tried here but it might be a little more sensitive to Roundup than your regular grasses so try spraying at a reduce strength that how I control Sage Grass here. I used the Roundup as a growth regulator here so it is spray at half strength but it does take out the Sage Grass and leaves the the hardy multi-year grasses.

You also may want to use a pre-emergent to prevent seeds from spouting as that takes care of the crab grasses here.

What are your favorite pre-emergents?
 
A neighbor gave me a new bottle of Barricade and it is alleged to be a pre-emergent stopping weeds for a year. Anyone here have experience with it?
 
Thanks for the tip! That’s really interesting — I hadn’t thought about using Roundup as a growth regulator. I’ve been struggling with nibble weed too, and if it’s even slightly more sensitive than the usual grasses, that could make a big difference. I’ll definitely give the reduced-strength spray a try like you do with Sage Grass. Appreciate you sharing what works for you!
 
…I want to use marker dye with the RoundUp, but was told only certain blue dyes with no ruin the RoundUo effectiveness. What are the names of these blue dyes and where to buy them?

Trust me, I’ve tried em all and there is now ONLY ONE marking dye I will ever use: TurfMark Blue

Zero problems using it w any chemicals

 

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