The larger maintained bogs that are along the northern Gulf coast are regularly burned back by prescribed fires. The isolated, mostly unknown smaller ones, the drainage ditches, etc., survive however they can...maybe ROW mowing, maybe burning off pine plantations, maybe the occasional ROW fire, etc.,. But, the big wildfires are long gone from around here except for very isolated instances. Before the country became "civilized", lightning would start wildfires that would burn thousands of acres before being extinguished by rains or maybe getting to a river to wide to cross. Then man decided that that wasn't a good thing (you know...it burned $$$trees, and $$$houses, and $$$crops, and...) so they starting putting the fires out as quickly as possible. Now, for the large bogs, it has come around full-circle and the bogs that are maintained get prescribed burning. I can only imagine what the coastal plain looked like back a hundred to a hundred and fifty years ago...can you imagine coming upon an ocean of white-topped pitcher plants shining in the sun!!!!!! It had to have been a sight!!!!
I do like the look of native "weeds" growing with the carnivorous plants...it looks natural. But, beware, as has been mentioned...most of those weeds will dwarf a capillaris or similar plant...even the filiformis and pitchers can be dwarfed if you get the wrong thing in there. And, it's just not above ground where they get crowded, but the root system of some of those weeds can be extensive to the point of choking out the carnivorous plants. But, if you have room for some, and it won't be a threat to the cp...they do look nice and natural (IMHO).