Blue Marguerite, Blue Felicia Daisy
Blue Moor Grass
Blue Mountain Lilac
Blue Oat Grass
Blue or False Sea Holly
Blue Pacific Shore Juniper
Blue Pfitzer Juniper
Blue Sage
Blue Spike Sage
Blue Star Creeper, Isotoma
Blue Thimble Flower, Globe Gilia
Blue Wildrye
Blue Yucca
Blue-Eyed Grass
Borage
Border Forsythia
Border Penstemon
Boston Ivy
Bottle Tree, Kurrajong
Bougainvillea