Campanula — 14 species

Campanula is a large genus of several hundred bellflower species ranging from low creeping alpines like Carpathian bellflower to upright border perennials such as Clustered bellflower (C. glomerata 'Superba') and statuesque Milky bellflower. Most thrive in full sun to partial shade with evenly moist, well-draining soil; afternoon shade helps in warmer climates. They prefer cool nights and resent waterlogged roots. Toxicity varies across the genus — some species are confirmed non-toxic to cats and dogs while others have limited safety data — so verify each species before purchasing if you have pets at home.