Floral Foam - Floral Craft Green Foam Block, 2.8x3.8x3.8 in. - 3 Pack - Walmart.com
Amazon.com: Crafare 6pc Wet Fresh Floral Foam Blocks Green Florist Foam Bricks for Spring Fresh Flower Arrangement and Crafts Supply 8.9(L) X 3.9(W) X 3(H) : Arts, Crafts & Sewing