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Rheum rhabarbarum (Garden Rhubarb)
| Date | Action |
| Nov 16 2008 | Netty (13946) added "3a (to -35 F / -37 C)" to Zones / Hardiness |
| Nov 16 2008 | Netty (13946) added "2b (to -40 F / -40 C)" to Zones / Hardiness |
| Nov 16 2008 | Netty (13946) added "Perennial" to Plant Types |
