[kolbasz]

Well, as was noted, it is time for the lawn to wake for the fall. As it begins to green and grow, POA T comes with it.

I sprayed some spots recently that I noticed early on, but today I realized how much worse the situation really is.

What is the attack plan, just glyphoste and pull where possible. Stay calm and keep after it as it is a slow go?

There is likely no easy elimination, so it seems just attack it when possible. Pull if the patch is small enough, spray as needed.

Between it and the bent/nimblewill my lawn is beginning to look so patchy. patches of dead grass and areas of just dirt.

What is the ultimate expectation of fill-in ability of kbg/prg. I know the kbg does well filling in, but what should I expect? Is a 3x3 area too much? is this where I supplement with some pro-plugs and be patient?

 

[ericgautier]

What is the ultimate expectation of fill-in ability of kbg/prg. I know the kbg does well filling in, but what should I expect? Is a 3x3 area too much? is this where I supplement with some pro-plugs and be patient?

I'm trying to find out myself. See this patch on my reno - http://thelawnforum.com/viewtopic.php?f=9&t=218&start=40#p6943 I totally forgot to take monthly pics, but that area today still has gaps. But, I haven't been aggressive at feeding it either. I plan to start the Fall Fert plan soon and hoping it'll fill in some more.

 

[fusebox7]

When temps have hit 75 degrees and are trending upwards - so depending on your local conditions - typically up here it's late spring/early summer. Every study that I've read claims that this is when (mutil-app) herbicides are most effective on the zombie grass. You can glypho or tear it out now but it'll be back and spring is when you should be ready to knock it back again. Eventually you can win the battle if you're strong enough

I don't like using glyphosate so I personally resort to highlighting it with Tenacity and ripping my yard to shreds by hand...

As for filling in ... I don't have any personal experience YET (first KBG lawn this year) but most people seem to describe a dinner plate size able to be filled in from spring to fall (1 growing season)

References:
http://turf.unl.edu/turfinfo/5-18_Poa_triv.pdf
https://www.extension.iastate.edu/turfgrass/blog/kentucky-bluegrass-regrowth-rhizomes

 

[kolbasz]

When temps have hit 75 degrees and are trending upwards - so depending on your local conditions - typically up here it's late spring/early summer. Every study that I've read claims that this is when (mutil-app) herbicides are most effective on the zombie grass. You can glypho or tear it out now but it'll be back and spring is when you should be ready to knock it back again. Eventually you can win the battle if you're strong enough

I don't like using glyphosate so I personally resort to highlighting it with Tenacity and ripping my yard to shreds by hand...

As for filling in ... I don't have any personal experience YET (first KBG lawn this year) but most people seem to describe a dinner plate size able to be filled in from spring to fall (1 growing season)

References:
http://turf.unl.edu/turfinfo/5-18_Poa_triv.pdf
https://www.extension.iastate.edu/turfgrass/blog/kentucky-bluegrass-regrowth-rhizomes

So, if I am comprehending what you are saying. I should stop spraying it here now in the fall...I'm going super OCD, I need to stop

 

[fusebox7]

Fall treatment (from research) can be effective but not as effective as spring/summer treatments. Is the area that is bad in dense shade or does it get some sunlight?

Also - what are your cultural practices? When I had my triv battle last year - I was watering too frequently/too shallow and I was mowing way too short. It may not be gone but it doesn't have optimal conditions to really take over like it can. Btw... it LOVES nitrogen and water.

 

[kolbasz]

Well, water it gets. Plenty of it.

The spots in the front are typical circles, annoying but managable to a point. I sprayed some pulled others. It makes me crazy but it is not the worst.

The back is where the issue is because the sloping of the yard. I have a small hill in the back and the slope from the house meet in the middle. so there is a valley right in the middle that is always wet. If it rains really bad, it is soupy. Essentially, the water collects here and drains poorly. This is where it is a giant section.

Last night I went out there, it is dead from glyphosphate and I can literally pull it up like carpet. It is most dreadful.

The area in the back gets early sun, once it comes over the trees and then all afternoon till early evening. So it is definitely not shaded.

The worst is that I have this giant section of killed grass and the debate of doing anything now or waiting till spring to hit it again, making sure it is dead. Then bringing in new dirt in an effort to level things better. Maybe even pay a guy to move the dirt and grade it better.

I might have to make that a secret plan I tell the wife about last minute...

 

[GrassDaddy]

Purdue says to remove it with an inch of soil below it and something like 6in around it. The roots are very shallow.

 

[kolbasz]

Purdue says to remove it with an inch of soil below it and something like 6in around it. The roots are very shallow.

I would need a back ho . I have a lot!

F me