Black Beauty Keystone Pennsylvania grass seed is a premium, all-purpose grass seed mixture specifically designed for the climates of the state of Pennsylvania. It thrives in full sun to medium shaded lawn areas. It provides an attractive, perennial, healthy, dark-green lawn. Black Beauty Keystone is naturally insect and disease-resistant. Grass seed germinates in 10 to 14 days. Black Beauty varieties root deeply, possess a waxy leaf coating to preserve moisture, have a uniform growth habit, and are grown by leading sod growers across the United States.