POA Triv or something nightmare

Kentucky bluegrass, Fescue, Rye and Bent, etc
Post Reply
legacy2000
Posts: 61
Joined: June 20th, 2012, 4:49 pm
Location: Connecticut
Grass Type: TTTF
Lawn Size: Not Specified
Level: Not Specified

POA Triv or something nightmare

Post by legacy2000 » May 15th, 2020, 11:08 am

Completed lawn renovation a few years back using Logan TTTF/KGB blend. Overall fairly pleased with the results. However, this year has been a nightmare with a weed explosion. Last year I noticed small patches what I believe now was of POA Triv, but thought it was an annual and completed ignored it which obviously was a huge mistake.

Please see pics, I believe pic #1 and #2 are patches of POA Triv but what really puzzles me is the fact it's basically popping up in areas that receive full sun. I thought POA Triv only prominent in shady areas? Any idea what weed is in pic #3


Image

Image

Image

northeastlawn
Posts: 1259
Joined: June 1st, 2015, 3:10 pm
Location: S.E. Mass.
Grass Type: KBG
Lawn Size: 1000-3000
Level: Experienced

Re: POA Triv or something nightmare

Post by northeastlawn » May 15th, 2020, 1:03 pm

The seed heads in the last photo indicate POA Annua.

Not sure, but triv will do OK in full sun in the spring, it just cooks faster in the summer. If sun prevented POA Triv it wouldn't be such a big nuisance in everyones lawn.

legacy2000
Posts: 61
Joined: June 20th, 2012, 4:49 pm
Location: Connecticut
Grass Type: TTTF
Lawn Size: Not Specified
Level: Not Specified

Re: POA Triv or something nightmare

Post by legacy2000 » May 15th, 2020, 3:04 pm

I think I have a POA annual under the question mark weed in pic #3

rxrep
Posts: 130
Joined: June 4th, 2010, 6:19 pm
Location: Cherry Hill, (Southern)NJ
Grass Type: Midnight KBG
Lawn Size: 5000-10000
Level: Experienced

Re: POA Triv or something nightmare

Post by rxrep » May 15th, 2020, 6:12 pm

Pic 3 definitely looks like Triv to me. It seems too stalky to be annua. Also Triv will grow in sunny areas.

User avatar
andy10917
Posts: 29739
Joined: February 23rd, 2009, 10:48 pm
Location: NY (Lower Hudson Valley)
Grass Type: Emblem KBG (Front); Blueberry KBG Monostand (Back)
Lawn Size: 1 acre-2 acre
Level: Advanced

Re: POA Triv or something nightmare

Post by andy10917 » May 15th, 2020, 6:44 pm

I disagree - I have never seen Poa Triv that upright or wide.


northeastlawn
Posts: 1259
Joined: June 1st, 2015, 3:10 pm
Location: S.E. Mass.
Grass Type: KBG
Lawn Size: 1000-3000
Level: Experienced

Re: POA Triv or something nightmare

Post by northeastlawn » May 15th, 2020, 6:52 pm

POA Annua seed heads are tricky. The main POA Annua plant can be the next bunch over, usually there are a few seed heads going off in multiple directions.I seldom pull a POA Seedhead where it goes directly right down to the roots.

So those POA Annua seed heads, might not be in that same bunch. Just because you see a POA Annua seed head, I wouldn't go spray round up on that clump, that may not be the POA Annua main plant.

rxrep
Posts: 130
Joined: June 4th, 2010, 6:19 pm
Location: Cherry Hill, (Southern)NJ
Grass Type: Midnight KBG
Lawn Size: 5000-10000
Level: Experienced

Re: POA Triv or something nightmare

Post by rxrep » May 15th, 2020, 6:53 pm

andy10917 wrote:
May 15th, 2020, 6:44 pm
I disagree - I have never seen Poa Triv that upright or wide.
Here's a pic of Triv. from Rutgers Turf blog. Looks like the same stuff to me.
https://www.google.com/url?sa=i&url=htt ... AdAAAAABAD
(Second pic - closeup)

User avatar
PSU4ME
Posts: 1147
Joined: November 29th, 2016, 9:29 am
Location: Metrowest MA
Grass Type: Front: Bewitched/Midnight/Everglade Back: Midnight/Diva/Everest
Lawn Size: 20000-1 acre
Level: Some Experience

Re: POA Triv or something nightmare

Post by PSU4ME » May 15th, 2020, 8:10 pm

3rd pic looks like quackgrass to me. I isolate them individually and paint them with glysophate. Did some today actually.

Triv and annua are bad this year from what I can see

legacy2000
Posts: 61
Joined: June 20th, 2012, 4:49 pm
Location: Connecticut
Grass Type: TTTF
Lawn Size: Not Specified
Level: Not Specified

Re: POA Triv or something nightmare

Post by legacy2000 » May 15th, 2020, 10:03 pm

Im guessing it’s quack grass too...anyway this spring has been brutal

legacy2000
Posts: 61
Joined: June 20th, 2012, 4:49 pm
Location: Connecticut
Grass Type: TTTF
Lawn Size: Not Specified
Level: Not Specified

Re: POA Triv or something nightmare

Post by legacy2000 » May 15th, 2020, 10:54 pm

rxrep wrote:
May 15th, 2020, 6:53 pm
andy10917 wrote:
May 15th, 2020, 6:44 pm
I disagree - I have never seen Poa Triv that upright or wide.
Here's a pic of Triv. from Rutgers Turf blog. Looks like the same stuff to me.
https://www.google.com/url?sa=i&url=htt ... AdAAAAABAD
(Second pic - closeup)
Wow just looked at the link and this pic is almost identical to the weed in my yard....I guess pic #3 might be POA triv after all. Thanks!

TimmyG
Posts: 2244
Joined: May 15th, 2012, 6:04 pm
Location: Dracut, MA
Grass Type: Northern Mix
Lawn Size: 20000-1 acre
Level: Experienced

Re: POA Triv or something nightmare

Post by TimmyG » May 17th, 2020, 12:09 am

Pic #3 is most definitely Poa trivialis. Most of mine (now everywhere) is in full sun, but I'm notably north in zone 5b/6a.

This is the time of season that gives Poa trivialis the common name "roughstalk bluegrass". We've been through this same argument and disagreement before and concluded that stalky purple in May is indeed triv. It simply looks different at different times of the year.

See this post and thread: viewtopic.php?f=4&t=24299&p=333140#p333140

User avatar
bernstem
Posts: 4232
Joined: April 15th, 2011, 2:59 pm
Location: St. Louis, MO
Grass Type: Front: Solar Eclipse/Award/Bewitched/Moonlight SLT/Prosperity Back: Solar Eclipse Monostand + Bewitched (shade)
Lawn Size: Not Specified
Level: Not Specified

Re: POA Triv or something nightmare

Post by bernstem » May 17th, 2020, 6:10 pm

Doesn't look like Annua or Triv. Quack has distinctive clasping auricles. No matter what specifically, grassy weeds get painted with round-up, dug up, or pulled in my lawn.

northeastlawn
Posts: 1259
Joined: June 1st, 2015, 3:10 pm
Location: S.E. Mass.
Grass Type: KBG
Lawn Size: 1000-3000
Level: Experienced

Re: POA Triv or something nightmare

Post by northeastlawn » May 17th, 2020, 7:34 pm

Following this thread had me second guessing all kind of stuff in my lawn, my KBG is recovering from a bad summer, but even the small plants that just greened up are sending out KBG seedheads. The stalky stalks are everywhere and I swear some of it looked purple and like triv after reading this thread.

Then I read a little more and in my case the KBG is just sending its seed heads out and is very stalky, Im not sure what TTTF does, but maybe its just the time of the year. I can tell POA Annua vs KBG most of the time now, and my KBG is in full on seed mode and sending all kind of strange shoots I never remember seeing before.

I really need those rhizomes to spread out and fill in gaps, so disappointed about the lack of top growth, but happy the law is healthy enough to be sending seed heads every wear.

gwlbe
Posts: 265
Joined: August 3rd, 2012, 9:19 am
Location: Central Maine
Grass Type: Northern Mutt
Lawn Size: Not Specified
Level: Not Specified

Re: POA Triv or something nightmare

Post by gwlbe » May 18th, 2020, 3:58 pm

Lime Green, grows faster in spring, nuke from space. I just did a 2nd app of Tenacity on the white grass,its everwhere. If your lawn borders field, woods, etc its a constant battle.

dantis496
Posts: 39
Joined: April 19th, 2018, 2:32 pm
Location: SE Mass
Grass Type: Front: Northern Mix Back: Elite KBG Blend
Lawn Size: 20000-1 acre
Level: Some Experience

Re: POA Triv or something nightmare

Post by dantis496 » May 19th, 2020, 1:13 pm

I am glad to see I am not alone....At times I feel like i'm going backwards. I see these photos of these lawns ans ask"why can't I get that, I put in the time and effort"...KBG definitely slow to start growing this year allowing the lime green to shine thru...ugh..

User avatar
turf_toes
Posts: 6042
Joined: December 17th, 2008, 8:46 pm
Location: Central NJ
Grass Type: 77% Blueberry/23% Midnight Star KBG in front. Bewitched KBG monostand in back.
Lawn Size: Not Specified
Level: Not Specified

Re: POA Triv or something nightmare

Post by turf_toes » May 21st, 2020, 3:14 pm

Digging it out with a wide parameter around the triv is your best bet. Killing it in the spring with glysophate is your 2nd best option.

Even with that, I’d suggest digging it out and replacing the soil (in case you have dormant triv seed in your soil.

Post Reply

Who is online

Users browsing this forum: Google [Bot] and 31 guests