Answer: The easiest way to keep insects from destroying dried flowers is to store the flowers in a plastic bag with a mothball. Before you plan to use the flowers, air them out for 24-48 hours to get rid of the mothball smell. If you use the flowers for seasonal arrangements, you can return them to the mothball storage bag when it's time to change arrangements. With this kind of protection, your dried flowers will last quite a long time.
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