So it is not a surprise that man has been involved in some form of floral preservation since the beginning of time.
Air drying and floral pressing are age-old arts dating back to before Egyptian times.
Ancient Indians in the high Andes Mountains practiced a form of freeze-drying. William Hyde Wallaston introduced the first modern freeze-drying method in 1813 to the Royal Society in London. The freeze dry method used today was perfected during World War II as a method to assist the storage of human plasma. Freeze drying is now employed quite extensively by pharmaceutical manufacturers and food producers. That depends on the budget, the look you want to achieve, and the length of time you want your preserved flowers to last.