General Plant Information (Edit)
|Minimum cold hardiness:
||Zone 8a -12.2 °C (10 °F) to -9.4 °C (15 °F)
|Maximum recommended zone:
||8 to 12 feet
||Late summer or early fall
||Suitable as Annual
|Propagation: Other methods:
||Not suitable for containers
|Posted by vic (North Carolina) on Dec 7, 2013 9:12 AM
Seeds should be grown in vermiculite and watered from bottom as they are highly susceptible to damping-off.
Roots can be dug before first frost and stored in a cool and dry environment.
Divide in early spring.
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