Black Beauty Rocky Mountain grass seed is a premium, all-purpose grass seed mixture specifically designed for the diverse climates of the Rocky Mountain Region. Black Beauty Rocky Mountain grass seed thrives in full sun to medium-shaded lawn areas and grows an attractive, naturally dark-green lawn. Black Beauty Rocky Mountain is naturally insect and disease-resistant. Grass seed germinates in 10 to 20 days. Black Beauty grass seed varieties root deeply, possess a waxy leaf coating to preserve moisture, and have a uniform growth habit.