When temperatures are expected to be in the lower to mid 30s in San Francisco Bay area, make sure your tender plants are ready. All SummerWinds Nursery carry Wilt-stop Plant Protector and Easy Gardener Plant Protecting Blankets during the winter season. A combination of Wilt-stop and a frost protection blanket is advised to most limit damage. Pay attention to sub-tropical plants (hibiscus, bougainvillea, canna and some jasmine). They are the most susceptible to damaged if not protected. At a minimum, you should water all of your plants. A well hydrated plant is less likely to suffer from cold damage. Additional steps to take: • Move potted plants to a sheltered location under the eaves, on the    porch, in the garage, shed, etc. • If you have time, you can construct a light frame and cover it with plastic (make sure    it doesn't touch the plant) or even an old quilt or blanket. • For trees like citrus that are hard to cover, try stringing Christmas lights in them. The    heat will help offset a freeze for most of our winter freezing temperatures. • Winter root crops should be OK. In fact, some say that a touch of frost sweetens carrots.