The Mexican bush sage is so wonderful that northern gardeners grow it as a prized annual. Fortunately for us, Salvia leucantha is hardy in the warmer parts of Zone 7...reliable for us to 0 degrees F if the soil is kept very dry in winter. We still recommend early establishment in Zone 7b, and no cutting back until spring. The hairy leaves clothe the upright stems that are topped with spectacular purple-and-white velvety flowers from late summer until frost in fall. Salvia leucantha is great as a hummingbird acclaimed accent in the back of the border or in a vase!