Phenomenal lavender is a newer variety that is prized for its hardiness (growers rate it as hardy to USDA Zone 5). But it's probably not hardy enough to reliably rebloom in the Twin Cities (Zone 4).

Lavender overwinters best in the ground, not in above-ground pots. If you can't sink a potted plant in the ground for winter, at least protect it from wind and add a little water during thaws to ...

They say that, if you want to bring lavender's fresh, floral scent to your home, you must be fully aware of which plant you are buying and its exact properties. English lavender is much more hardy ...