Adding a delicate airiness to the landscape, Anthriscus can be annuals, biennials or perennials, with fern-like leaves and umbels of frothy white flowers. Native to Eurasia, their flowers gracefully mingle with other plants, adding unmatched elegance. Anthriscus cerefolium (Chervil) is used in the kitchen to flavor food. Anthriscus sylvestris (Cow Parley or Wild Chervil) can grow aggressively in some areas and outcompete native vegetation.