I have annual bluegrass in my bermuda, what can I do, preferably post-emergent?

Answer 1

I'm not a bermuda grass expert (cool season grass expert),

but, I know of one product labeled to take annual bluegrass out. Its quasi selective.

Product is called "certainty" made by monsanto.

From the label and sell sheets I see, it does take out Annual Blue(poa annua) but seems to affect some grasses around it. They are banking on perennial bluegrasses filling in the injured areas.

The product is a professional product, so you may not even have access to it where you are.

Here in the North, i have sold a few to golf courses, but Im not sure if its labeled for your state or if anyone can get it for you.

One more thing.

Look into 2 strategies.

In the north, I have had customers employ a strategy of putting down a" crabgrass" pre-emergent in the early fall (sept). This keeps the poa germination process down considerably for next season. Even though they dont become a problem until next season, the timing is crucial .

With Bermuda, im not 100% up to date on warm season grass timing. Investigate it further locally.

The other thing to look at:

Growth regulators.

a couple of them are probably restricted use in your state, but Embark possibly isnt. Golf courses use them often to suppress seed head formation , reducing its ugly appearance. It keeps them growing slower, and reduces seed populations for next year.

You may not even find it where you are but if you do, it should cost around 75 bucks for a gallon of concentrate.

It will last a while though and you can use it on shruberry to slow the growth rate too. sprayed befor ethe major growth or after trimming, it keeps the trimmed appearance 2-3 times a s long without any other effects.

read this about some pre-emergent strategies.

They dont specifically discuss annual blues, but a lot of info that will be helpful in dealing with it. Crabgrass and annual bluegrass are both annual nuisance grasses grown from seed the previous year.

http://doyourownlawncare.wordpress.com/2007/01/09/manage-your-weeds-the-professional-way/

Also a link from a my previous post dealing with creeping bent grass in a lawn. Similar situations though because they are both nuissance grasses in the lawn.

http://answers.yahoo.com/question/index;_ylt=AtUobF1VgPysHDT_U_.Rdfzsy6IX?qid=20070104173504AA17jfg&show=7#profile-info-ff7220b3acb455cc5b031fdccb03ebc9aa

good luck

Answer 2

Careful watering in shady areas, annual bluegrass removal before it goes to seed and use of PREemergent chemicals at the right time of year (check the label instructions) are the techniques that work best.

While there are postemergent herbicides that distinguish between broadleaf and grassy plants, I personally am not aware of one that distinguishes between grass species. Isolated patches of annual bluegrass might be treated with Roundup--then reseeded or re-sodded--but this isn't an option if the weed is scattered in your lawn.

Answer 3

Revolver herbicide kills Annual Rye in Bermuda, but I don't know whether it is listed for Annual Blue. The warm weather will knock your Annual Blue out as spring warms up. Next fall pre-emerge to prevent this problem next winter

Answer 4

When I lived in the south Bermuda grass would be dormant in February while cool season grasses (bluegrass) would begin to grow. When this happens you can spray Roundup on anything green in your yard and kill it the dormant Bermuda will not be harmed.

Answer 5

check with local lawncare co. see if they have post emergent contol chemicals.....if the buegrass is patchy you could carefuly try using round-up to kill it and dig it out and re seed/sod. but if its scattered throughout, try post emergent or totaly renovate