"The Fibonacci numbers are Nature's numbering system. They appear everywhere in Nature, from the leaf arrangement in plants, to the pattern of the florets of a flower, the bracts of a pinecone, or the scales of a pineapple. The Fibonacci numbers are therefore applicable to the growth of every living thing, including a single cell, a grain of wheat, a hive of bees, and even all of mankind." - Fibonacci in Nature by Nikhat Parveen
Thanks to the Fibonacci sequence in roses, you can make your own rainbow rose. You must cut the stem of a white rose vertically four times. Soak each part of the stem in a different color of water. Nature will do the rest!