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SILPHIUM trifoliatum |
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Description: A very attractive Silphium with lance-shaped leaves in whorls of 3 or 4. Lovely purplish stems hold panicles of 1-2 inches single yellow sunflower-like flowers. Prefers rich well-drained soils, but very tough and adaptable. Occurs in wooded borders, shaded creek valleys, and dry, open woods | ||||
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Plant Facts... Plant Type: Herbaceous Perennial Growing Zones: 5 - 8 Sun Exposure: Full Sun Hardy To: -15°F Soil Moisture: Moist, well-drained Bloom Color: Yellow Width: (at 10 years) 2 - 3 ft. Height: (at 10 years) 3 - 5 ft. |