With the upcoming cooler weather, the tulips' bloom should last longer, according to Gille. But before it becomes too cold ...

Also known as the Mexican flameleaf, poinsettias are mostly grown for the brightly colored leaf structures or bracts, which bloom at the top of the plant in showy shades of red, pink, white ...

The Imperial Crown's infamous odor may have evolved as a way to repel herbivores such as moles, gophers or deer.