No, your Sago Palm is probably NOT dead!
The trunk of the plant is usually not harmed if it undergoes brief periods of below freezing temps.
Follow these steps to prune it correctly and you should see new fronds growing from the center once our weather warms up in April – May.
The fronds that are brownish-yellow will not change back to green – they are dead. Cut them back to the trunk. BEWARE of the sharp barbs that protrude from the trunk. You do not want to suffer a puncture from one of the barbs since it can evolve into a serious medical problem if not treated properly. We suggest using a long lopper to trim instead of a hand trimmer so you are not in close proximity to the barbs. (If you are not comfortable trimming your plants our professional maintenance team can do so for you)
After pruning, new fronds will emerge (flush out) from the crown of the palm once our temperatures warm up enough. Usually once the night temps have reached 70 degrees. You should see 2 -3 flushes during the growing season.