Red Clover

This is Red Clover, Trifolium pratense, a member of the bean family, Fabiaceae. As such, it has the special root nodules containing bacteria which fix nitrogen, making it widely planted as a soil improver. I had thought it was another annual, but it is in fact a 'short lived perennial'. I'm not exactly sure what the definition of 'short lived' might be, but suspect at least three years (or it would be 'biennial') and fewer than thirty.