A wedding pomander size doesn't depend on the size of the foam sphere, but the length of the flower stems. If you were to go up in the ball size, the wet foam adds a lot of weight. When Oasis came out with the netted sphere, that help a lot, enabling us to attach a ribbon more easily and equally support the weight of the foam sphere all around.
To create this look, you'll need the following flowers and florist supplies:
It is so important to process your fresh flowers promptly (and correctly!) upon arrival. Using the recommended products means you treat your flower the way a professional florist would.
Float soak your netted sphere in water that has been treated with Crystal Clear Flower food. Let it sink in the water, not pushing it under. Otherwise you take a chance on dry pockets in the foam. After inserting your flowers, lock them into place with Floralock Stem Adhesive. This insures those short stems won't come out of the foam.
Mist well with a flower sealant such as Finishing Touch or Crowning Glory. Re-wet as necessary up to wedding day so the foam doesn't go dry. Refrigerate if possible, if not, keep in cool room and mist often with flower sealant.