L. angustifolia. 24-36" plant height and spread, this is a hybrid cross of Lavendula angustifolia and Lavandula lanata. 12-18" stems, beautiful silver felted foliage and fat, dark purple flowers. The white woolly color of the leaves makes Silver Frost a beautiful contrast in the garden. One of the oldest plants at Purple Haze is a gorgeous Silver Frost specimen that grows at the SE corner of Jose's shed. 20+ years and still going strong, it is absolutely stunning when in full bloom. Give this variety plenty of sunlight and room. Zones 5-8.