This may be the most unusual-looking winter-blooming flower. Native to the Mediterranean, honeywort (Cerinthe major purpurascens) has silvery blue-green leaves and blue-purple tubular flowers and bracts. Honeywort is considered a hardy annual or short-lived perennial, depending on where it grown. It blooms in winter in Zones 9 and warmer. In Zones 7-8 it can be planted in fall for an early spring bloom. The plant can tolerate light frosts but a hard freeze will kill it.