Violet to Blue Flowers
Aster, Arrow-leaved 
Aster, Ciliolate
Aster, Large-leaved 
Aster, New England 
Beardtongue, Hairy
Bell Flower, Blue Marsh
Bittersweet Nightshade
Blue-eyed Grass
Blue Flag
Bugle, Common 
Bugloss, Viper's
Catnip
Chicory
Flax, Garden (F)
Forget-me-not, Smaller
Forget-me-not, True
Gentian, Closed
Gill-over-the-ground 
Heal-all
Hepatica, Round-lobed
Hyacinth, Grape
Lobelia, Brook 
Lobelia, Pale-spiked 
Lupine, Garden
Mint, Wild 
Monkey Flower 
Nightshade, Bittersweet 
Pasque-flower (F) 
Pennyroyal, American 
Peppermint 
Pickerelweed 
Skullcap, Mad-dog 
Speedwell, Common 
Speedwell, Corn 
Speedwell, Thyme-leaved 
Stickseed, European 
Vervain, Blue 
Vetch, Cow 
Violet, Common Blue 
Viper's Bugloss