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Coreopsis grandiflora (Bigflower Coreopsis, Largeflower Tickseed)
| Date | Action |
| Jun 30 2008 | Netty (13946) added "4a (to -25 F / -32 C)" to Zones / Hardiness |
| Jun 30 2008 | Netty (13946) added "Perennial" to Plant Types |
