Symbol key:

Z planting zone
Planting depth depth below the water surface to plant the roots.
0 refers to the water line, or moist to dry soil
blue flowers
orange flowers
peach flowers
pink flowers
purple flowers
red flowers
white flowers
yellow flowers
plant prefers shade
plant prefers part-sun
plant prefers full-sun
flowers are good for cutting
day blooming
night blooming
invasive species, may be illegal to ship or own in certain states
native species to North America, likely to be easy to care for
plant should be potted, either for ease of care, or confinement
species is rare in the wild
over-winter indoors in regions experiencing a frost