Return to the Garden Clinic Forum | Post a Follow-Up

Selective herbicide usage

Posted by cherax Syd NSW Aust (My Page) on
Thu, Nov 29, 12 at 13:37

Hello All....
I have a perplexing problem with Erharta (introduced grass) absolutely invading a sea of predominately bromelliads and aside from using diluted Roundup G2 wonder whether any people have ideas relating to selective destruction of monocots whilst leaving dicots and broms alive. I know that roundup diluted can be safe (conducting dilution trials) just interested in others experiences.
All thoughts are welcome

Follow-Up Postings:

RE: Selective herbicide usage

Selective herbicide use is easy.

Roundup kills monocots & dicots, thus is NOT selective.
Because you want to kill grass (monocots) among dicots, use an herbicide which only kills monocots.

But realize that bromeliads are monocots. So you could paint the herbicide onto the grass while avoiding the bromeliads.

Check the label to determine whether or not you need to dilute the herbicide for a paint-on application. For that purpose, it's often applied full strength.

RE: Selective herbicide usage

i used roundup ... by using a chem proof rubber glove.. with a cotton glove on top ... and a bucket of round up ... and simply grabbed and bathed the grass in the garden ...

it was a bit tricky to start.. but once i learned how to get the excess out of the cotton glove.. it worked pretty well ... [basically i quit dunking the whole glove in the solution .. and dripping everywhere]

you are in a box that says you want to SPRAY ... there are other application procedures ...

this is one of those jobs.. where one is hoping there is an easy way to do it ... life in my garden.. usually dictates.. that there is no easy way ... and its all hard work ... or a long process ....

good luck ...


ps: the alternative would be to prep a new bed ... remove one or two of everything precious .. and then simply destroy the old bed ... and start over ... and sometimes with an invasive weed such as grass.. that ends up being the only real alternative ...

RE: Selective herbicide usage

Cherax, Fluazifop, the active ingredient in FusilladeII®, takes grasses out of broad-leaf plants. I have used it successfully to take torpedo grass Panicum repens out of hedges.
The product is expensive but it has an extensive and comprehensive label.

RE: Selective herbicide usage

  • Posted by cherax Syd NSW Aust (My Page) on
    Sun, Dec 2, 12 at 15:33

Thanks ronalawn82
thats the info that I need to pursue
many thanks

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Garden Clinic Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here