Description : Is lavender (lavandula angustifolia var. rosea) hardy in zone 6b?
Last Answer : answer:Yes. Here where there are pockets of zone 5 (sheltered and sunny) it winters over.. On my windy hill that gets the brunt of the gales from the NW and is considered zone 4b, it does ... before the first heavy frost. You can have a bed entirely of the different species of lavender. Lucky you.