Quote Originally Posted by Norfolkgrey View Post
Bi-annual / Biennial (B) - A plant that grows the first year then flowers and dies in the second year and the abbreviation is often used on plant descriptions/ seed packets. Sometimes used to described short lived perennials.
If I might be picky - you're most likely to be looking at 'biennial plants' - just as NG described. Bi-annual would be flowers twice a year. Like effing dandelions - no, not true, dandelions should be known as poly-annuals, I think.