| Life cycle: | Biennial |
| Minimum cold hardiness: | Zone 6a -23.3 °C (-10 °F) to -20.6 °C (-5 °F) |
| Maximum recommended zone: | Zone 13 |
| Inflorescence Type: | Verticillaster |
| Conservation status: | Vulnerable (VU) |
| Posted by eclayne (Pioneer Valley south, MA, USA - Zone 6a) on May 7, 2015 5:08 AM Uaoe aMnricdy uautbletd giumr pdslnu rsno rs.rrontegmcAe taeox gh oasusst te is ftrh bnniAliuofed ao [ Reply to this comment | |
