An infestation of Cogon Grass in a sandhill area at the southeast corner of the north tract seems to be expanding and may reach the eastern fire lane soon unless treatment begins.
Another section of this small sandhill patch contains the only population of Clitoria fragrans on this site.
I once tried to occasionally dig up the grass to control it, but learned at a webinar I watched a couple of years ago that such an approach was futile and might encourage the spread.