There are more than 200,000 types of flowering plants on the planet, with colors that range all over the spectrum, but some flower species only produce a limited variety of color. Unusually colored flowers found in florist shops for weddings and special occasions are usually dyed flowers. For example, the widely popular blue rose is actually a white rose that has been dyed. Dying flowers at home isn't a difficult process, and the materials needed can be found in your kitchen.
Fill a vase about half full with clean water.
Administer approximately 30 to 40 drops of food coloring into the vase of water for every 2 cups of water contained within the vase. Add more food coloring if you want to achieve a deep, vibrant color in your flowers.
Gather the roses in your hand with the stems pointing downward. Cut across the bottom 2 inches of the stems diagonally with the scissors. The rose stems will be pointed.
Place the roses, stem first, into the vase of colored water.
Allow the roses to sit in the water for approximately 24 hours in a cool place. Within 24 hours, the vein system of the flower's stem will have sucked the colored water through, dispersing the dye throughout the flower's petals, resulting in a dyed flower.