Hello Gardeners, I’m Amanda McNulty with Clemson Extension and Making It Grow . Sago palms are the most readily available cold hardy cycads that we can grow in most of South Carolina. Well-established cycads will usually survive temperatures down to 15 degrees, but their beautiful, stiff, pinnately-compound leaves which normally stay green and live through winter are killed when we have unusually low temperatures. It’s best to let those dead leaves most of our sagos now have remain on the plants