What if evergreen implies her being a supplier of kids internationally, and manages to keep her supply going very consistently? Think about how she had money all of a sudden.. she climbed the ranks and clearly established herself in the underworld. Evergreens are known to be on every continent but Antarctica, and keep their foliage throughout all seasons. Some evergreens can even survive in DROUGHT conditions cough cough.
http://sciencewithkids.com/science-facts/facts-about-evergreen-trees.html