
There are a number of methods of preserving flowers and foliage - hanging them upside down to dry, burying them in sand or borax, placing them in shallow containers with a small amount of water to begin with, and soaking them in glycerin. The last method is especially helpful when space is limited.
Standing flowers upside down in boxes, crocks, or pans, and pouring or sprinkling borax over them is a time-tested process, but many flowers dry by the more simple upside-down method. I like this best because it is the easiest and also gives excellent results. Materials keep their shape and flowers do not fall apart. However, some flowers, pansies and zinnias, for example, will not dry by this method but must be treated with sand or borax.