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Iris x hollandica 'Blue Ribbon' (Dutch Iris)
| Date | Action |
| Nov 08 2009 | toni (36069) added "8a (to 15 F / -9 C)" to Zones / Hardiness |
| Nov 08 2009 | toni (36069) added "8b (to 20 F / -7 C)" to Zones / Hardiness |
| Nov 08 2009 | toni (36069) added "9a (to 25 F / -4 C)" to Zones / Hardiness |
| Nov 08 2009 | toni (36069) added "9b (to 30 F / -1 C)" to Zones / Hardiness |
| Nov 08 2009 | toni (36069) added "Perennial" to Plant Types |
| Nov 08 2009 | toni (36069) added "Bulb" to Plant Types |
| Nov 08 2009 | toni (36069) added "Dutch Iris" to Common Names |
