Oasis floral foam bricks are used in flower shops across the country. The medium density works well for standard arrangements including chrysanthemums, roses, carnations, liatris and other common flowers.
The foam actually mimics the cell structure of live flowers. It makes it easy for the flowers to draw water up to the flower head and keep it hydrated for a long time.
Each brick measures 9 in. x 4 in. x 3" and is marked at both the 1/3 and 1/2 as an easy cutting guide.
Be sure to allow the foam to "float soak" and not force it under the water, but allow it to draw up water naturally so each part of the brick is fully saturated.
Every saturated brick holds up to 2 quarts of water each.
Florist foam is available in several different density weights. It
depends on what type of flower and your own needs in designing when
making your choice of foam.