Salvia nemorosa 'Caradonna' has glowing purple stems loaded with violet-purple flowers that bloom from June to October. With its gray-green aromatic foliage, this hybrid sage makes an attractive accent all summer long. To increase bloom time, it should be cut back after the first bloom. 'Caradonna' is a magnet for butterflies, bees and hummingbirds and is deer-resistant. It is hardy for container gardening and provides excellent cut flowers.