We have greatly reduced the amount growing in our areas of grassland by pulling it all up for a number of years, however a couple of areas that have recently been coppiced within the woods were very well populated (ok they were full of it). Some of these plants were huge, 7 feet tall and up to 12 stems in some cases, quickly filling the trailer up.
Anyway it has now all gone up in smoke, the best way to get rid of it is to burn it to ensure that any seeds are killed. A really hot fire needs to be burning and then the Ragwort gradually thrown on top, it smokes a lot but works well. I just hope no one had their washing out and that there isn't another flowering season this year!