Harmony I have this one -
Singapore daisy Sphagneticola trilobata
This plant forms dense mats of runners on the ground that smother native plants. Leaves are glossy, notched, somewhat fleshy and often lobed. Flowers are a bright yellow daisy. Able to reproduce by small seeds but are more likely to grow from a section of stem or root. Spread by water, garden dumping, mowing and vegetative spread.
for a photo
Note it is called Singapore Daisy but it comes from central America. It was introduced as cover for coastal sand dunes, before they said oh no, and people had taken bits and let them loose elsewhere to become a problem.
Bumpkin to it growing to a foot high, if only there is nothing for it to rest upon.
It came here a major runoff from one of those 6 inches rain in about an hour events.
At the time it seemed like not such a big deal. There were other issues to take care of, like the lowest corner of fencing that disappeared.
Yes to bringing down it my chicken wire fences. And being up amongst the grouped shrubs, making it hard to get to to dig it out, itty bit by itty bit of stem that that roots at every leaf node.
At times I've made inroads to it as it went creeping across mown grass areas.
I'm trying to keep it in a 'holding area' atm, and just pull bits from the edges at times.
There are other things I brought here against the advice of the people who originally had them.
And some my parents brought here and planted without my knowledge.
Fish tail ferns that grow like the dickens here as opposed to their place. I'm responsible for the much regretted sacred bamboo that I also brought from their place. Again, rainfall differences make a huge difference.
Many other weed trees species just jumped fences or came with the birds.
Yes I have a jungle thing happening way down the back where no one can easily wander.
The soil that eroded beneath roots way back with that 6" rain even from a low off the coast meant mowing down there stopped happening.
Its raining here.
To the north there is another cyclone that is having its second turn at being a cyclone. I don't think that is what is bringing today's showers though.
This season elsewhere has had numerous hail storms, or tear thing apart storms, so I shouldn't complain.