About This Striking Blooms: These blue globe thistle seeds yield 2-inch metallic-blue spheres from midsummer to fall. Ideal for USDA zones 3–9, a drought-resistant choice among gardening seeds. Easy to Grow: Sow echinops ritro seeds for planting flowers 1/4" deep in well-drained soil. As unique flower seeds, they prefer full sun yet tolerate poor ground, adding blue colors to flower garden. Hardy Perennial: These globe thistle seeds form 2–3 ft tall perennials with spiny leaves. Perfect for perennial flowers displays, handle heat & require minimal watering. Combine with wildflower seeds. Unique Addition: Plant southern globe thistle seeds to enjoy an exotic silhouette in your flower garden. Thistle stems are perfect for cut flowers & dried thistle flower arrangements. Long-Lasting Blooms: Plant blue echinops seeds for a repeat show if you deadhead early buds. These thistle seeds for planting provide summer color that stands out for perennial plants. Overview Indoor/Outdoor Usage : Outdoor Brand : KVITER Material Feature : Heirloom Color : Blue Special Feature : High Germination Rate Expected Blooming Period : Summer to Fall Sunlight Exposure : Full Sun Unit Count : 35.0 Count Expected Planting Period : Spring to Fall Product Care Instructions : Water