Poa Trivialis

[bob0755]

Hi:

Is this what I think it is (poa trivialis)?

And yes, I am stupid enough to want to try Certainty (cautious dose to at least contain it).

[MorpheusPA]

Hard to tell, actually. When in doubt, I spray with Tenacity. If it whitens, it was P. triv.

[southern-ct-4]

Does annua not whiten with Tenacity? If not, what happens to annua when hit with tenacity? Does it just (hopefully) start dying off after a few doses?

[MorpheusPA]

Annua also whitens, and (hopefully) dies after a few doses as well. It does depend on the weather, when you did it, and so on, of course...

[bob0755]

Here is another photo:

[Green]

Definitely Triv in the above photo. That's one of the wide bladed/coarse types. Glyphosate and Sulfosulfuron both are extremely effective independently at killing this type in my experience.

[MorpheusPA]

Agreed. Spray and, possibly, nuke it from orbit.

[PALawnGuy5]

I nuked so much triv in my front yard this spring, i don't have much of a yard left.

That, mixed with an excessive amount of loss for snow mold, has resulted in a very bad spring.