All these should be grown in a garden space with at least six hours of full sun per day. They should all air-dry well. Harvest these dry flowers before the flower is fully open, advised Gredler, as they will open more as they air dry. Do not use flowers past their prime. Dry flowers in a dark, warm, well-ventilated place, such as an attic, closet or garage.
Some flowers look best if dried upside down.
Others are better dried standing up in a container.