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Height: 18 Width: 14 Sun: Full sun to partial shade Soil Moisture: Prefers rich, moist, well-drained soil. Hardiness: USDA Hardiness Zone 4-10. Culture: Drainage is very important. Plant with crown slightly raised above the soil. Mulch around the plants but leave crowns uncovered. Remove spent flowers to encourage rebloom. Divide in spring or fall every 3 years.
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