All roots, stems and leaves of the plant die annually. Only the dormant seed bridges the gap between one generation and the next. Perennials are plants that grow persistently for many seasons. When starting perennial plants from seed, blooms will be observed in either the spring or summer of the second year and each year thereafter.
Biennials are plants that require two years to complete their life cycle.
First season growth results in a small set of leaves near the soil s surface. During the second season's growth, a stem will appear, the plant will flower and seed will form. This is followed by the entire plant's death. In the southern portion of the United States, wildflower plants tend to grow much quicker than in the north due to the warmer weather and extended growing season. Wildflower planting dates depend mostly on site location and geographic weather patterns.