This past winter had five inches snow and a cold spell for five days. Now palms are almost all brown. Will they come back or do I need to prune all off?
Frozen Sago Palms
Certified GKH Gardening Expert
There is a great chance that it has been killed. The only thing that you can do right now is wait until you see new growth. Once that happens, you may start cutting the dead growth a few fronds at a time per day. If you do not see any new growth in the next two months, then it is more than likely dead.
In the future, try and wrap any sensitive trees in burlap or cloth to prevent freezing on the colder nights.