We sometimes spray our dried flowers very lightly with unscented hair spray. It doesn't change the looks, just helps them stand up to minor shocks. We usually don't do this until they're arranged in bouquets.

We've found that some flowers can take up humidity from the air for a long time after they seem "dry." Hollyhocks and Gomphrena globosa do this, especially if you leave the foliage on the gomphrena. We store those in closed plastic boxes with a little bit of silica gel in the bottom. After several months -- or after spending the winter in our unheated barn -- the problem pretty much goes away.

Hi Everyone,I am brand new to this site and need help on drying cockscomb. I live in Iowa and I came across them yesterday at a Amish vegetable market. They are so vibrant that I don't want to lose any of the color. Also how long can I keep them in water before they lose any color? Any suggestions would be greatly appreciated!
Sincerely,
Maureen_Lea

Coxcomb will keep in water for about a week. If you want to preserve them, hang them upside down. Someplace warm and dark, like an uninsulated attic, is best. Depending on the thickness of the stem, drying can take from one to two weeks.

Again, Neil is right on! Your only real enemy is humidity.