I think I'll change the life cycle to annual. I'm not sure that a plant sprouting in winter and flowering the following spring can be classified as a biennial. That would still be an annual. Mine never grow vegetatively for an entire year before blooming the next year, which would meet the definition of a biennial plant.
I'm not sure about adding the option to the general database information. I think it's such a rare case that it can be covered in plant comments.