Blue Cornflowers - Best Botanicals for Soap and Bath Bombs Our blue cornflower petals are a beautiful floral additive for your soap, bath bombs, and more. Cornflower petals are naturally bright blue in color and look amazing when added to handmade products. Use dried cornflower petals to top soap bars, decorate your bath bombs, or blend with bath salts. Our bulk cornflower petals are perfect for adding a stunning touch of natural color to your product. You can also use botanicals to top your wax melts. We don't recommend using botanicals in candles. We strive to offer the best pricing on cornflower petals so you can enjoy using these petals in a variety of projects.