Seeds germinate in 10 - 28 Days Plant seeds 1/4 - 1/2 inch deep. Space seeds or seedlings 1 inch apart, in rows 12 - 24 inches apart. Plant height is 8 - 36 inches tall. Blooms all Summer long This Wildflower seed mixture is an exciting blend of colorful annuals that is sure to entice butterflies and hummingbirds to your garden all summer. Simply direct sow into the soil after last frost in full sun, and you will have delightful pollenators in your yard all summer long.