POA Trivialis in 2 month old sod????

lawnman77August 17, 2014

I installed KBG sod a little over two months ago. I ended up getting a hybrid KBG/fescue mix. I have been arguing with the sod supplier that what they gave me was not 100 percent KBG. At any rate, I think I have POA Trivialis coming up on the side only where it is more shadey and wet then the other parts of my yard. We have received more rain this summer than usual. I only try to water once a week at 1 inch. Is this something that was existing I. The soil or came from the supplier? Can someone ID the pics I have posted as rough bluegrass. If it is rough bluegrass can I use a combination of a premergent with post emergent. I have mixed tenacity with prodiamine for my back yard with great success. Is it too soon for a premergent on two month old sod? Thanks for all the help.

Thank you for reporting this comment. Undo
lawnman77

Here is another pic.

    Bookmark   August 17, 2014 at 2:08PM
Thank you for reporting this comment. Undo
lawnman77

One more pic.

    Bookmark   August 17, 2014 at 2:09PM
Thank you for reporting this comment. Undo
greencarpet(7A)

That does look like poa triv. Pre emergents will not do anything to triv, they spread via stolon and don't seed like poa annua..pre-m will work against poa annua, but not triv which you may have. Even tenacity may whiten it, but won't kill it. Triv can even come back from roundup/glyphosate. The only full proof ways to take it out are dig it out(but don't leave any stolons!!!) or use certainty herbicide which is known to work on triv. Certainty can kill tall fescue though if you have some in there.

I did 3 round of glyphosate on my triv last fall when I was renovating and much of it came back this year. I have TTTF so can't use certainty.

Triv is the devil.....

    Bookmark   August 19, 2014 at 9:33PM
Sign Up to comment
More Discussions
Lawn issues (tree roots drying out lawn, uneven ground, grading e
I have been a long time lurker, but this is my first...
tomormatt
Grass & pine straw in winter
Part of my yard St Augustine grass, much of which is...
tao55
New bermuda sod just installed
It is 30 degrees here and I was told to water every...
420benz
Why would my neighbor's yard be snowless?
I know this isn't really related to lawn care specifically,...
asm198 - Zone 6a (MO)
What order do I restore my lawn?
I live in the CA Bay Area and have a fescue lawn. ...
Brent Villalobos
© 2015 Houzz Inc. Houzz® The new way to design your home™