Put two flowers of the same type next to each other and a new flower will pop up. Depending on what colors you put, differet colors will pop up.
Example:
Roses:
red+red=black or red
red+white= pink, red, or white
red+yellow=orange,yellow, red
white+white=purple or white
purple+black=blue
(color combinations vary depending on what type of flower)
I got this info from my knowledge of Wild Word.