Large white flower clusters up to one foot across are held on stalks up to 5 feet tall above coarsely dissected leaves. Greener leaves and a more refined character distinguish this species from the more common Angelica hendersonii. While it is rare on the sea cliffs of northern California, sea-watch has a large distribution along coasts throughout the northern hemisphere. Give regular moisture and part shade in areas away from the coast. Attracts bees and butterflies.