This is a spectacular, flowering mix of both natives, and naturalizing species. With the Pacific Northwest's wonderful climate for growing wildflowers, this mix has proven itself year after year to flourish and provide beautiful color from spring to fall. The mix includes approximately 27 easy to grow species of annuals, perennials and biennials. Many varieties will live over or reseed ensuring a permanent wildflower garden of your own. A real, year-round adventure, as the different varieties come into bloom. Hardiness zones: 5-8 (-26øC/-15øF, -10øC/15øF) in winter. The climate of the Pacific Northwest is a wet coastal climate, with abundant winter rains, dry summers, and mild temperatures year-round. Temperatures are usually above freezing in winter. The summer average temperatures are: 66-70øF (19-21øC) at night and 86-90øF (30-32øC) during the day. To aid in natural reseeding and to keep a neat appearance, you can mow the flowers after they have gone to seed and lost their bloom. Mow them at a height of 4-6 inches-mowing below 3 inches could damage the perennial flowers.