 They mainly consist of aromatic fruits and seed products although Australian wild peppers also have spicy leaves.There are also a small number of aromatic leaves but unlike culinary herbs from other cultures which often come from small soft-stemmed forbs, the Australian herb species are generally trees from rainforests, open forests and woodlands.Australian herbs and spices are generally dried and ground to produce a powdered or flaked spice, either used as single ingredient or in blends.