Oat is a cereal. The Latin name for oat is Avena sativa. It is an annual plant from the grass family (Poaceae). Bunchoat is an old variety with a compact inflorescence. Oat is grown since 7000 BC. Originally Oats come from South-East Europe and South-West Asia and arose from the wild oats (Avena sterilis). Of course we grow oat as a dried flower. Oats are dried very suitable in dry bouquets, arrangements or as a decoration in a freshly cut flowers bouquet.
Consider a dried bunch oat in a vase as mono bouquet! There is in terms of decoration everything possible. The choice is up to you to make the most beautiful out of it.