I remember last summer pulling a fair amount of it in one spot that was looking very ratty as the seed pods matured. This year, literally the entire floor of the woods is covered with it and it is working into my borders. I have spent three days pulling it and have made little headway. The task of eradicating this is daunting. Usually one raceme to a flowering stalk, although there can be short side stalks and sometimes additional flowers later in the season.
Flowers can be self or cross pollinated.
Any plant rosette that survives the winter will flower, no matter how small. Seed pods, correctly termed a linear silique, begin forming while the flowers are still opening. Each plant can produce an average of over three hundred thirty-five seeds. Seeds ripen and disperse from mid-June until September. Seeds are dormant upon ripening and require cold stratification to germinate.