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Helianthus tuberosus (Jerusalem artichoke)
| Date | Action |
| Sep 09 2010 | Netty (13946) added "3b (to -30 F / -34 C)" to Zones / Hardiness |
| Sep 09 2010 | Netty (13946) added "3a (to -35 F / -37 C)" to Zones / Hardiness |
| Sep 09 2010 | Netty (13946) added "Perennial" to Plant Types |
