So, I came back to clean up the rest of the Singapore daisy infestation and the wonderful ground staff had cleaned up most of the remaining plants and removed the waste!! Well Done Dovetree staff!! Singapore Daisy creates a matt of roots and suckers, so there were a few stalks left, so I removed all that I could see. This is the small pile seen between the two grevillias on the left in the photo. But early detection before becoming too large an area, and prompt action and joint effort has stopped this infestation!! So Happy!!