Yes, you can use this to spot foam w/ gly: https://gciturfacademy.com/products/foam-herbicide-applicator

However, I recommend showing some pictures of your area as well as close ups to confirm they are Triv. If area is too large, the foam method will be too time consuming

 

I do this quite a bit. Roundup makes a gel stick that I use in concert with a rubber glove. I rub the gel on the glove and then I lightly "rub" the triv blades above the fescue. The neighbors think it looks insane, I'm sure.

 

Yes, I've had success doing this. Get a rubber glove and a cotton glove. Put them on one hand, rubber glove first to protect your skin then covered by the cotton glove. Dip the cotton glove into a very small cup of Roundup, just a few fingers wet, then "pet" or wave across the taller Poa Triv blades. There is a video of this and I'll look for it. It's called something like the glove-in-glove method.

Here it is: https://thelawnforum.com/viewtopic.php?t=24804

 

Hey, another member on here said to drop a few seeds onto/into the treated poa triv while doing the treatment. I usually wait until it dies then pull it out. But I'm going to try it his way this year.

 

Give up the idea to save the fescue. Triv will grow 4x+ in a season. Glove-in-glove doesnt have great efficacy so just bite the bullet and do it properly.

Spray with gly now, and then again in 2 weeks and drop seed after the second app. May thin out in the summer and then overseed in the fall.

If you have Triv growing already in the SE, did you apply early fertilizer? The two lawns in my neighborhood in Charlotte that I see Triv actively growing have very green lawns and pretty sure they throw a ton of fert + water on, and their Triv goes wild as a result in the spring. I had a big issue last year with Triv that I killed off, and I did early urea in Feb that made the Triv go wild. This year I applied a slow organic fert for the spring, and about a month later than last year. My lawn is just starting to green up here now and is not in the first 10% to wake up…probably needs another week. But I also don't see any Triv yet.

 

Thanks for the responses. Very helpful information.

 

Yes, I've had success doing this. Get a rubber glove and a cotton glove. Put them on one hand, rubber glove first to protect your skin then covered by the cotton glove. Dip the cotton glove into a very small cup of Roundup, just a few fingers wet, then "pet" or wave across the taller Poa Triv blades. There is a video of this and I'll look for it. It's called something like the glove-in-glove method.

Here it is: https://thelawnforum.com/viewtopic.php?t=24804

Thanks. Have you had success with actually killing it (not coming back the next season in those areas) or just temporarily knocking it back? If I could just get 75% reduction, then I'd be happy with that.

 

Give up the idea to save the fescue. Triv will grow 4x+ in a season. Glove-in-glove doesnt have great efficacy so just bite the bullet and do it properly.

Spray with gly now, and then again in 2 weeks and drop seed after the second app. May thin out in the summer and then overseed in the fall.

If you have Triv growing already in the SE, did you apply early fertilizer? The two lawns in my neighborhood in Charlotte that I see Triv actively growing have very green lawns and pretty sure they throw a ton of fert + water on, and their Triv goes wild as a result in the spring. I had a big issue last year with Triv that I killed off, and I did early urea in Feb that made the Triv go wild. This year I applied a slow organic fert for the spring, and about a month later than last year. My lawn is just starting to green up here now and is not in the first 10% to wake up…probably needs another week. But I also don't see any Triv yet.

Good info.. My soil was very deficient, so it had heavy applications of fertilizer in the fall and a lower rate application a couple weeks ago. My fescue looks great, but I think it likely contributed to the poa problem (along with the wet soil from overseeding in the Fall). I will definitely try to hold off longer on the fertilizer in the future. Thanks for your advice.

 

I agree with Steve...Triv loves mild Winter weather and early Spring fert. Don't do it! One time when I fertilized lightly in Dec and had mild weather (Dec here is similar to Jan weather in NC, SC, or TN), my Triv went nuts and continued growing slightly into early Jan while everything else was dormant. As for Spring, I usually load up on Fall fert so hard that my Triv blows up in April from the carryover anyway without applying anything additional in April.

 

Thanks. Have you had success with actually killing it (not coming back the next season in those areas) or just temporarily knocking it back? If I could just get 75% reduction, then I'd be happy with that.

I think that is the attitude you need. You get what you can but expect it to come back. I now have a few small manageable areas whereas I had larger major cut-out and sod areas last Spring.

I'm going to try the method offered by @stevehollx

 

FWIW, my lawn this year is starting to wake up and we had a super heavy rain so some Triv in my lawn popped up. I'm happy to report that none of the spots I had an issue with last year are showing signs of it. The new spots are 6" patches, so I hit them with gly last week and will hit them again in +10-14d and then drop seed on top.

One tip I've mentioned in other threads but not here is apply Tenacity when you put seed down. Then, if some Triv breaks through (usually in the edges) then you can see it since it will turn white and you can gly+speed those micro-spots. Had good success with that late spring last year.

 

FWIW, my lawn this year is starting to wake up and we had a super heavy rain so some Triv in my lawn popped up. I'm happy to report that none of the spots I had an issue with last year are showing signs of it. The new spots are 6" patches, so I hit them with gly last week and will hit them again in +10-14d and then drop seed on top.

One tip I've mentioned in other threads but not here is apply Tenacity when you put seed down. Then, if some Triv breaks through (usually in the edges) then you can see it since it will turn white and you can gly+speed those micro-spots. Had good success with that late spring last year.

I've gotten white fescue seedlings with Tenacity at seeding too. It does not whiten only the poa.

 

FWIW, my lawn this year is starting to wake up and we had a super heavy rain so some Triv in my lawn popped up. I'm happy to report that none of the spots I had an issue with last year are showing signs of it. The new spots are 6" patches, so I hit them with gly last week and will hit them again in +10-14d and then drop seed on top.

One tip I've mentioned in other threads but not here is apply Tenacity when you put seed down. Then, if some Triv breaks through (usually in the edges) then you can see it since it will turn white and you can gly+speed those micro-spots. Had good success with that late spring last year.

I've gotten white fescue seedlings with Tenacity at seeding too. It does not whiten only the poa.

With a light rate (1/2 tsp per M I think? Whatever is on the syringe which I think is ~70% of the fescue dosage spec) you can tell the difference between fescue seedlings and poa T seedlings. It's curlier and whiter than what fescue seedlings look like. Confident it allowed me to discern Poa T vs. fescue seedlings. May be harder in a KBG lawn due to the closer genetics.

 

Thanks again to everyone who replied. One last question, is Velocity impossible to get at this point?

 

Before realizing I had Poa I applied some liquid iron trying to even out lawn color. Some of the lighter areas with Poa turned a slight yellow/brown color. Then I stumbled onto this video saying that iron could be useful for Poa to suppress phosphorous levels. Will avoid phosphorous heavy fertilizer from now on and try adding iron regularly.

https://www.youtube.com/watch?v=dk_whyW2Qjg

 

Before realizing I had Poa I applied some liquid iron trying to even out lawn color. Some of the lighter areas with Poa turned a slight yellow/brown color. Then I stumbled onto this video saying that iron could be useful for Poa to suppress phosphorous levels. Will avoid phosphorous heavy fertilizer from now on and try adding iron regularly.

In video desc, they are talking about POA Annua, not Trivialis