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Helleborus orientalis 'Mardi Gras Double'
| Date | Action |
| Mar 17 2011 | Jewell (5504) added "7a (to 5 F / -15 C)" to Zones / Hardiness |
| Mar 17 2011 | Jewell (5504) added "7b (to 10 F / -12 C)" to Zones / Hardiness |
| Mar 17 2011 | Jewell (5504) added "8a (to 15 F / -9 C)" to Zones / Hardiness |
| Mar 17 2011 | Jewell (5504) added "9a (to 25 F / -4 C)" to Zones / Hardiness |
| Mar 17 2011 | Jewell (5504) added "Perennial" to Plant Types |
| Mar 17 2011 | Jewell (5504) added "Deciduous" to Plant Types |
| Mar 17 2011 | Jewell (5504) added "Double Hellebore" to Common Names |
