Campanula persicifolia (Blue Peach-leaved Bellflower)
Campanula is the aristocrat of the garden, and Campanula persicifolia (Blue Peach-leaved Bellflower) is an example of why. One of the easiest bellflowers to grow and most well-behaved, this lovely blue bellflower grows from two to four feet tall, with stalks dotted with beautiful blue/lavender, saucer-shaped flowers in late spring/early summer that last for quite some time. The flowers aren't the only thing attractive about this blue bellflower: the bright green, lance-shaped foliage forms neat, spreading rosettes that can easily be divided and should be divided every two or three years. Sun/partial shade. Zones 5-8. Quarts.