Ernst Seed mixes are formulated to suit specific needs while providing diversity and versatility. Many of our native mixes have a combination of annuals, biennials, and short to long-lived perennials. The composition of our mixes is such that the landscape will evolve over time. Cover crops are used, when applicable, to control erosion and reduce light available to weed seedlings. Performance of mixes will vary in response to site conditions including, but not limited to, hydrology, soil type, light, pH, fertility, and contaminants. If you have questions about your specific needs, call Ernst Conservation Seeds, at 800-873-3321.