Weedy oxalis
Tim Harvey (Tue, 23 Nov 2010 18:55:08 PST)
I grow Oxalis convexula just north of Los Angeles in Thousand Oaks. I have had it in the ground for 7-8 years and it is definitely not invasive. I have to save bulbils in the spring and plant in fall if I wish to propagate this species. I believe they do not survive the heat of summer.
Certain species of Ferraria and Cyanella are much more of a problem here.
T