whitecup
Ageratum houstonianum
Myosotis scorpiodes
leather flower
Hyacinthus candicans
viper's bugloss
Nierembergia rivularis
cape hyacinth
blueweed
Echium vulgare
Clematis versicolor
forget-me-not
bluecurls
Mertensia virginica
common grape hyacinth
blue devil
Galtonia candicans
blue thistle
common ageratum
mouse ear
periwinkle
Muscari neglectum
Solenostemon blumei
potato vine
lavender
blue curls
Veronica serpyllifolia
blue-lilac
bluish-lilac
heal-all
bush violet
cowherb
Michaelmas daisy
Solenostemon scutellarioides
ageratum
Lobelia siphilitica
blue cardinal flower
great lobelia
Solanum jasmoides
Coleus blumei
heliophila
Aster novi-belgii
New York aster
thyme-leaved speedwell
browallia
Joseph's coat
painted nettle
Exacum
genus Exacum