Beautiful and fragrant blue petunias get their unusual color from a molecular defect in the system that controls the acidity of the plants' cells. IE 11 is not supported. For an optimal experience ...

Roses are red, violets are blue. Except they’re not. They’re, er, violet. True blue flowers are exceedingly rare, and not for lack of effort. Plant breeders have repeatedly tried to nudge ...

Garden flower's secret weapon: Petals of common plants produce an 'invisible blue halo' that helps bees find them. An 'aura' invisible to the human eye surrounds some flower petals ...

University of Cambridge. (2017, October 18). Petals produce a 'blue halo' that helps bees find flowers. ScienceDaily. Retrieved June 2, 2025 from www.sciencedaily.com / releases / 2017 / 10 ...

Flower petals make their blue halo illusion with somewhat irregular versions of what are called diffraction gratings, rows of ridges like the recording surface on a CD.

Rare Blue Flowers Reveal How Petals Get Their Color. News. By Stephanie Pappas published 2 January 2014 When you purchase through links on our site, we may earn an affiliate commission.

True blue flowers are exceedingly rare, and not for lack of effort. ... she came across Hibiscus trionum—a white flower whose petals have dark-red bases. And those bases, Glover noticed, ...