Ladybells look a lot like bluebells (Campanula spp.) and are found in many old-fashioned borders along fences. They form clumps of narrowly ovate leaves, from which emerge numerous leafy flower spikes two feet tall. Tubular lavender-blue flowers appear starting in July and continue flowering for over a month. The plants are very cold-hardy and can endure for decades due to their deep, thick roots. They will spread from the roots into colonies, but are not known to be invasive. This genus differs from true bluebells by the presence of a small ring surrounding the pistil at the base of the flower. Some plants thought to be this species are actually the weedy Campanula rapunculoides, which differs in flowers that bloom on only one side of the spike.