The ideal time to plant wildflower seeds depends on the region and climate. In temperate regions, late fall (September-December) is optimal as the soil is still warm, and winter rains help facilitate germination. In early spring (March-April), as the soil warms up, it provides a favorable environment for seeds to germinate. Planting at these times ensures the seeds have enough time to establish root systems before going dormant or before the ground temperature is warm enough for them to germinate.