| Apr 19 2009 | purple (14) deleted "4a (to -25 F / -32 C)" from Zones / Hardiness |
| Apr 19 2009 | purple (14) deleted "4b (to -20 F / -29 C)" from Zones / Hardiness |
| Apr 19 2009 | purple (14) deleted "5a (to -15 F / -26 C)" from Zones / Hardiness |
| Apr 19 2009 | purple (14) deleted "5b (to -10 F / -23 C)" from Zones / Hardiness |
| Apr 19 2009 | purple (14) deleted "6a (to -5 F / -21 C)" from Zones / Hardiness |
| Apr 19 2009 | purple (14) deleted "6b (to 0 F / -18 C)" from Zones / Hardiness |
| Apr 19 2009 | purple (14) deleted "7a (to 5 F / -15 C)" from Zones / Hardiness |
| Apr 19 2009 | purple (14) deleted "7b (to 10 F / -12 C)" from Zones / Hardiness |
| Apr 19 2009 | purple (14) deleted "8a (to 15 F / -9 C)" from Zones / Hardiness |
| Apr 19 2009 | purple (14) added "9a (to 25 F / -4 C)" to Zones / Hardiness |
