There are many other annuals suitable for fresh cut flowers or drying! This list does not attempt to be comprehensive, but merely to cover the basic plants to start with in an annual cutting garden.
HERBS and VEGETABLES
Agastache Anise Hyssop
*Allium Chives, Garlic Chives
*Artemesia Artemesia (F) A. lactiflora is the one Artemesia that is grown for its flowers, not its silver foliage. Flowers can be used fresh cut or dried. All others are used fresh or dried for silver foliage.
Asparagus Asparagus (F)
Brassicas Broccoli flowers
Foeniculum Fennel (F) and flowers
Pelargoniums Scented Geraniums (F)
Ruta Rue (F) and flowers
*Salvia Sage (F) and flowers
*Tanacetum Tansy (F) and flowers
There are many, many herbs that make excellent cut or dried flowers or foliage. This list highlights some of the most important ones.
Note: The plants marked with * can be easily dried using natural methods such as hang drying, drying on a screen, etc. Many more of these flowers can be preserved using silica gel, glycerin, etc. There are many excellent books on drying flowers as well as growing fresh cut flowers. This list is intended to be a basic reference. The subject is vast. I hope this sparks your imagination and starts you on a life long hobby of growing fresh and dried flowers!