This is a non-native annual that can turn up just about anywhere, never in any abundance, usually only in ones or twos, at least in my experience around here. However, in some places it is a real invasive of crop fields. I've had the odd one in my garden (not planted by me), and I've seen them in various locations, including in the past at FWG. This is the first one I've seen this year. They have an attractive flower and seed pod. They are in the mallow family.