My husband brought home a campanula from the supermarket yesterday. I think it is Campanula Canterbury. Can it be planted out in our garden when the weather warms? How do I care for it in the meantime?
I think you are referring to Canterbury Bells, Campanula medium. It is a biennial spending the first year in green growth and flowering the second year. It then dies but produces ample seed to collect or let fall. It likes full sun but will do OK in a south-facing window until after your frost free date. Acclimate it to the outdoors and enjoy. https://www.gardeningknowhow.com/ornamental/flowers/canterbury-bells/canterbury-bells-plant-how-to-grow-canterbury-bells.htm