Purple, your Oxalis stricta became 2-3' tall? Mine has grown to 6 inches max, but generally it stays at 3"...i wonder if this is something else i have? Someone ID'd it for me as O. stricta. It has the same exploding seeds though. I went lawnless 3 or 4 years ago and was surprised to realize that most of the weeds i had grew in the lawn. I was only left with these O. something or others...i weeded them for awhile but then realized they are quite pretty and provide a nice ground cover so now i just let them grow (mostly).
Now i can hardly find a weed
