Red Yarrow is a hardy perennial with showy flower heads composed of many tiny, tightly-packed flowers. Their fern-like leaves are often aromatic. Yarrows are easy to care for and versatile: they are good for borders, rock gardens, or wildflower meadows. These flowers are excellent for cutting or drying, and also bring butterflies to your garden.
Yarrow seeds benefit from a cold period prior to planting. This process of providing cold is known as stratification. Ideally, yarrow seeds need a month-long stratification window. You can achieve this indoors by storing seeds in the refrigerator for a month. Place seeds in a damp paper towel tucked into a plastic zipper bag or in damp sand.
You can also achieve stratification by using winter sowing techniques to grow yarrow seeds. With this method, you plant yarrow seeds in containers outdoors in late fall. These containers should mimic mini-greenhouses, having a cover that can be sealed for winter but easily vented in spring. By using winter sowing methods, yarrow seeds naturally receive the cold treatment they need and sprout when spring air begins to warm the soil.
Sow yarrow seed in a commercial seed starting mix that’s designed to get seedlings off to a solid start. Barely cover yarrow seeds. Aim for a one-quarter inch of soil at most. Yarrow seeds need some light to germinate.
Germination is slow with yarrow seeds. If you keep soil temperature at 70°F, germination should occur within 14 to 28 days. At lower soil temperatures, it can take as long as 100 days for yarrow seeds to sprout. You might consider investing in root zone heating mats if you’re planning on growing yarrow seeds.
Botanical Name: Achillea millefolium Life Cycle: Perennial Light Requirement: Full Sun Planting Season: Spring, Fall Plant Type: Tall Wildflower with Sturdy Green Stalk and Clusters of Red Blooms Features: Heirloom, Attracts Pollinators, Fragrant, Drought Tolerant, Cut Flower Garden Color: Red Blooms: Summer Days to Maturity: 85 Days Plant Height: 12-30 inches Plant Spacing: 12-24 inches Planting Depth: 1/8 inch Sowing Method: Direct Sow Cold Stratification: Yes Hardiness Zones: 3, 4, 5, 6, 7, 8, 9