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How can flowers be dried by hanging them upside down?

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floral decoration — Floral decoration An eternal bouquet for the dead, limestone relief from Egypt, 4th century bce; in the Brooklyn Museum, New York.

To dry flowers by hanging them upside down, you should gather specific garden flowers—such as celosia, blue salvia, globe thistle, alliums, and hydrangeas—at their peak of bloom. The process involves suspending the flowers in a dark, dry place for several weeks.1

This method is one of several techniques used for drying plant materials to create arrangements, often referred to as a winter bouquet. Unlike methods that require burying flowers in substances like silica gel, which necessitate wiring the flower heads afterward, hanging them upside down preserves the stems as part of the dried specimen.1