Ok thanks for the tip with the paper cups ill try that. What do you think of using newspaper to cover bare areas in between the dymondia. I can cut little holes in the newspaper and put it around the dymondia to serve as a shield fron the sun. I read about this now and heard I should have done this before planting my dymondia plugs. Do you think doing this after would help? I plan on both spraying and then trying this newspaper trick.

Before using Roundup, please learn how toxic it is for environment... and not just locally. It drains into streets, then sewers, then ocean, then evaporates, then rains on us. Huge lawsuits are final being won against the manufacturer (Monsanto).

Glyphosate drains into streets and sewers when it is sprayed all over. I have seen truck sprayers spraying a 6 foot width stripe on the street to get rid of a couple of weeds growing in cracks. If you want to be careful, you can use a brush and apply it to the leaves of the plant you are trying to get rid of so it will be absorbed into the leaves and do its job.

I have a lawn of Dymondia, 2 years old very established, still have weeds that grow through, dandelions and others, tried a weed killer to kill some sedge that I brought in with amendment/mulch, all of them kill the Dymondia back too. I don’t like Glyphosate, it’s close to Agent Orange. I just hand pick the weeds every few weeks, I have drip irrigation under the ground cover, that helps.

To get rid of your weedy plant, you might consider taking up the Dymondia and re-potting it. You may be able to save it all and grow it on. In the meantime cover your weedy patch with newspaper or black plastic to kill the weed without using herbicide. Meanwhile the Dymondia, now in pots will have been growing.

When the time is right, replant the Dymondia. Quite a process, I know but may be more time efficient in the long run.