Our plants begin freshly cut with a mixture of biodegradable liquid glycerin that may be tinted with food colorants. This glycerin mixture is 100% biodegradable. In fact, it is the same glycerin found in soaps and beauty products. While the plants absorb the glycerin mixture, the stabilizing liquid spreads throughout the plant just like sap. Once fully absorbed, the stabilized plants keep their soft flexibility and their aspect of freshness.