Perennial Herbs Zone 3
I'm heading back home to ND in a couple weeks. My mother and I share a love of gardening and I'd like to give her a gift of some perennial culinary herb plants. They need to be hardy to Zone 3 but with the warmer winters they've been having lately, hardy to Zone 4 might work too. What would you suggest? She does annual herbs - dill & basil. They have average to good soil and I think she would place them in one of two areas both of which get full sun. Thanks for your help!