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This plant is said to grow outdoors in the following regions:
Owasso, Oklahoma
This was a 1993 introduction I got from White Flower Farm. Has grown well in Tulsa, OK area for the last 21 years. Border zone 6b/7a
'Vampire' is very hardy as it was recently developed in Canada.
This was a 1993 introduction I got from White Flower Farm. Has grown well in Tulsa, OK area for the last 21 years. Border zone 6b/7a
'Vampire' is very hardy as it was recently developed in Canada.