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Hypericum calycinum (St. John's Wort, Aaron's Beard)
| Date | Action |
| Jun 29 2009 | Jewell (5504) added "8b (to 20 F / -7 C)" to Zones / Hardiness |
| Jun 29 2009 | Jewell (5504) added "9a (to 25 F / -4 C)" to Zones / Hardiness |
| Jun 29 2009 | Jewell (5504) added "Drought Tolerant" to Plant Types |
| Jun 29 2009 | Jewell (5504) added "Shrub" to Plant Types |
