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Helenium autumnale (common sneezeweed)
| Date | Action |
| Jun 03 2008 | Netty (13946) added "4a (to -25 F / -32 C)" to Zones / Hardiness |
| Jun 03 2008 | Netty (13946) added "3b (to -30 F / -34 C)" to Zones / Hardiness |
| Jun 03 2008 | Netty (13946) added "Perennial" to Plant Types |
