OASIS Floral Foam Spheres are made of OASIS Deluxe Floral Foam infused with Maxlife Preservative to preserve the integrity of your flowers and increase the lifespan of your arrangement, allowing them to securely hold the thickest of stems. Made in the USA. OASIS Floral Foam DEGRADES in 567 days in an anaerobic environment (landfill). (ASTM D5511) For use with fresh flowers. Soak in water before inserting flowers. Use the float-soak method to hydrate floral foam with water. Lay sphere atop a basin of water and let it sink into the water by its own weight. Allow foam to fully saturate, approximately 2 minutes. Do NOT push foam under water Precut spheres made of OASIS Deluxe Floral Foam are infused with patented Maxlife Preservative, securely hold the thickest of stems. Perfect for topiaries, centerpieces, holidays and other creative applications.