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SILPHIUM perfoliatum |
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Description: Need a bold accent? Try this! Distinguished from other silphium by its square stems and pairs of cup-forming leaves, this prairie native has 3-inch lemon yellow sunflowers on 4-8 foot stalks. Leaves are opposite and are fused around the stem forming a cup that collects rainwater. Adapts well to prairies, wildflower/native plant gardens, naturalized areas or moist, open woodland areas including stream and pond edges. | ||||
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Plant Facts... Plant Type: Herbaceous Perennial Growing Zones: 4 - 8 Sun Exposure: Full Sun Hardy To: -25°F Soil Moisture: Moist, well-drained Bloom Color: Yellow Width: (at 10 years) 3 ft. Height: (at 10 years) 6 ft. |