GOLD YARROW 100 SEEDS Duration: Perennial Bloom Time: Summer Height: 36” to 60” Spacing: 18” to 24” Light: Full Sun Soil Moisture: Medium USDA Zone: 3a-10b Germination: No pre-treatment needed. Sow seeds on soil surface at 70F and water Delicate fern-like leaves beautifully set off the deep gold or yellow clusters of blossoms. It's foliage and flowers are long lasting, both in the meadow, and as cut and dried wildflower. Easily grown, it can also be invasive, taking over a complete meadow in two to three years. Historically prized as a medicinal herb, it was used extensively by both the Romans and Greeks in wound dressing and as an anticoagulant.