Lol Christopher, thank you for responding. Looks like you nailed it on the ID. While you also may be spot on about adjusting my feelings, and I may get there (with therapy and flip flops), I would like to ask about Chlorsulfuron. Just doing some reading on tall fescue and found Alligare Chlorosulfuron 75 pre-emergent herbicide, which claims to slowly kill off tall fescue while not affecting Kentucky Blue. Thoughts?

I know nothing about Alligare Chlorosulfuron 75 pre-emergent herbicide. Maybe a lawn geek will find this post and comment. I do know all these specialty herbicides are not cheap. How slow and at what cost is the question?

I'm a gardener who cares for the real plants that make an actual garden, not a lawn mower dude. If it is green, the lawn is fine as far as I am concerned.

Yes, green is good, and it is actually the fact the fescue is getting so brown and crunchy that's bumming me out. We have tons of veggies and flowers and trees growing too, so that helps. Thanks again.

Would love to hear from any others, lawn geeks or otherwise, who may be in the know on this topic.

Getting the fescue out of your bluegrass is probably a tough one even for the lawn geeks. Plus they're all busy mowing things this time of year. God Bless Them. I hope one shows up. I'd be interested to hear how this might be done.

From a gardening perspective, if fescue is invading the bluegrass now, it is likely to continue as an ongoing issue. Since the fescue is going to be a common turf grass in the area, it has also most likely naturalized where it can get enough water. Will this be an ongoing battle?

It wouldn't hurt to call or check online at your county cooperative extension office. They are generally big into turf.

Hello all... I have Tall Fescue here in MN, but we also get "Clump Grass" or clumps of course fescue, normally used on road sides( Kentucky 31 Fescue is a coarse fescue that is often sold for roadside plantings) and such.. Course or "BAD" fescue will grow in clumps in your KBG and /or Tall fescue lawn, the only way to get rid of it is... If you only have a little of it, you can dig it out, but its going to have a rather large root system, you can try and spot spray Round Up on each clump, but you may kill some surrounding desirable grass also... If you have lots of it all over, it may be best to start over. Again, depends have truly bad it is...

I also dont think Alligare Chlorosulfuron 75 will kill Tall Fescue.. The herbicide is a selective herbicide, I have never used it, but I looked it up and I didnt see where that would kill what your trying to kill... Have a great day!

We do have a lot of it. After looking into tall fescue and specifically K31, I think we know our enemy now. Thanks to both of you for helping. We overseeded several years ago, apparently badly, and this stuff is having its way with us. I have tried to live with it, but the way it is behaving in the extreme heat is making it hard to ignore. The lawn is clumpier, bumpier, uglier every year, not good for people who like to go barefoot and play outside with the grand babies. We have experimented with a couple of things that knocked it back for a minute, but the ongoing battle is a big concern. We will think about a do-over.

hi Barrowp - Did you find a solution with Alligare Chlorosulfuron 75 pre-emergent herbicide or did you plan to do-over? I am in zone5 chicago and have the exact same problem. It is getting worse every year, and I wish there is some product to treat.

Hi roshanrosareo, I still want to consult with our county extension office as was suggested. But we are thinking we have let it go too far and it's probably a lost cause, just not yet ready to tackle the do-over. Let me know if you learn anything please.

hi Barrowp- This fall, I have done dethatching and aeration and have overseeded heavily with Scott's KBG grass seed. I am just hoping if the KBG can overtake the remaining fescue. If the fescue is in atleast few spots, I could use roundup in those spots, but they are very much distributed. I wish I had known in the earlier years when there was very little fescue, I might have used roundup immediately. Just waiting now positively to see in Spring. I am trying to mow and keep 2'' right now constantly this fall, hoping if it would kill fescue. I also requested Trugreen to treat fescue with one application, but they don't guarantee to treat fescue since they mention fescue is a type of grass.

These stuff also invaded my garden last year! I have uprooted these plants from deep and plowed the soil. Finally I have got rid of this problem!

Roshanrosareo - good luck, hope you have success!
Myra - good for you! Sounds like another "vote" for a do-over.
Thanks to both for your replies.
I'm still interested on hearing from anyone else who has experience or knowledge about how to get rid of the dreaded K31.