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'Blue Glow' Globe Thistle is a dramatic, 3-4 foot tall perennial with many, 2 inch, intense blue flowers in perfectly round heads. The gray-green leaves are prickly, and deeply cut. 'Blue Glow' Globe Thistle blooms over a long July to September season. Its flowers attract butterflies, and are superb in fresh or dried flower arrangements. Winter hardy to zone 3.
Sow seed in cell packs or flats, press into soil, do not cover. Light aids germination. Kept at 65-70° F., germination is in 14-21 days. Can direct sow into prepared seed beds in groups of 4 seeds, spaced 2 feet apart. Thin to the strongest plant.
Comments: Full sun, adapts well to average soil, thrives in poor, alkaline soil. Drought tolerant once established, more flowers with moderate water. Fast growing, long-lived (up to 10 years or more), not invasive. Deer and rabbit resistant. Attracts bees, birds and butterflies.