Flowers that have acid in their petals are shades of red, while flowers that have base in their petals are purple/blue. The varying amounts of acid or base in a flower petal can create a variety of ...

Mimosa is 2009's color of the year. Mimosa in any form is irrepressibly cheerful. The warm spray of the tree’s blooms, the bubbles and crisp tang of the cocktail (and the giddy result, of course).

‘Mimosa' is Pantone's Pick For Color of 2009: We Disagree A garish yellow is Pantone's pick of 2009? Yuck.

"The color is really to make the flower stand out from the rest of the plant so that they will attract insects to spread their pollen," says Dr. Nancy Goroff, a chemist at Stony Brook University.