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Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 2: 69. Courtesy of Kentucky Native Plant Society. |
Recommended Temperature Zone:
sunset: 1-9,11-24
USDA: 4 to 8
Heat Tolerance: Generally dies in summer in the low deserts.
Sun Exposure: Full sun to part sun
Origin: Southern Europe
Growth Habits: Herbaceous perennial, 2 to 3 feet tall (60-90 cm), 12 to 18 inches spread (30-45 cm); densely woolly, silver-gray leaves, up to 5 inches long (12 cm)
Watering Needs: Prefers moist soils, but will tolerate low to moderate water
Propagation: Seeds, self seeds if the conditions are right
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