Between July and September, it puts on a rogue show of thistle-shaped purple flowers that bob over black-mottled bracts — hence the name. It's considered invasive and noxious across most U.S ...

With dark, velvety bracts that resemble bat wings and whisker-like filaments, the black bat flower is an exotic plant that [… ...

Known for its rich, deep purple-black flowers, the Black Hollyhock thrives in winter, adding a gothic touch to any garden. Its petals are deep maroon to black, emitting a chocolate scent.