Floral foam, also known as oasis, is a lightweight, porous material used primarily in floral arrangements. It is designed to hold water, providing hydration to cut flowers and helping them stay fresh longer. The foam can be easily cut and shaped to fit various containers, making it a popular choice among florists. When using floral foam, it is essential to soak it in water before inserting flowers. This allows the foam to absorb moisture, which is then gradually released to the stems. Floral foam is often used in wedding bouquets, centerpieces, and other decorative arrangements.