Hydrangeas are one of those flowers that almost dry themselves. Once dry, they can last and look beautiful for years. You can dry hydrangeas several ways, the biggest challenge in drying hydrangeas is timing when to cut the blossoms. If you cut them in peak bloom, they have too much moisture and don’t dry quickly enough to retain their beauty. Too late, and they’ll just turn brown. The ideal time to cut hydrangea blossoms for drying is toward the end of the season, August through October, when the larger petals are starting to fade or change color and the tiny flowers on top of the colorful petals are just beginning to open. Keep reading the tips at gardening.about.com.