Abstract: Frost covers are described that define an enclosure for an individual plant or group of plants to protect the sides and lower portions of the plants as well as their tops from frost damage. Each cover is shaped to envelop a single plant or group of plants and is provided with a retaining mechanism, such as an elastic band or drawstring, which allows the frost cover to be secured to the plant or group of plants against winds. The covers are inexpensive, reusable, disposable, and may be formed into a variety of shapes and sizes to accommodate a wide variety of sizes of plants and groups of plants. The frost covers are fashioned from a semi-transparent, air-permeable and moisture permeable membrane that permits some sunlight and water to pass through the membrane while causing frost to form atop the membrane rather than on the covered plant.