Greek foxglove is a species in the digitalis genus and is known botanically as digitalis lanata. It is a flowering perennial or biennial herb that blooms in the early summer producing white and purple speckled flowers on tall stalks. Grecian foxglove is hardy in USDA Zones 9a through 11 and benefits from winterizing protections in temperatures below 45 degrees Fahrenheit.
Water your Greek foxglove deeply in the fall to help prepare the plant and roots for the coming winter drought conditions. Water well before the first hard frost and supplement rainfall thereafter as needed to keep the soil evenly moist. During the winter, water in the early part of the day while the soil is warm and water can percolate more easily through the soil.
Prune back any faded bloom stalks, dead foliage or damaged plant parts in the late fall after the first frost. Make cuts all the way down to the base of the stalk at the plant crown and discard the cuttings in the compost pile. Repeat this inspection and pruning again in the spring, removing any parts of the plant that did not survive the winter in a healthy state.
Mulch around the base of your Greek foxglove in the fall after watering to insulate the plant roots against winter cold and drought. Create a 3-inch thick blanket of shredded bark, compost, leaf mod or cocoa bean hulls from the crown of the plant out to at least 3 inches past the floxglove's drip line.