Here's a link which explains the many flowers which are named for Our Lady. I planted my first Mary garden the year of my Confirmation, and have a large garden which I try to add new flowers in honor of Our Lady.
The Candlemas Rose blooms before any other flower in spring, even the crocus. Mine blooms in early March here on Long Island. I suppose that whoever named this flower saw it bloom on February 2nd, or Candlemas.