I have several sago palms that were subject to 19 degree weather. What can be done to get them green again?
My Sago Is Yellowing
It is hard to say how well they will survive. Sagos have a hard time regrowing leaves that have died. Once the weather has warmed up in your area, prune away any parts of the fronds that are brown or yellow, as these are dead and will not return. After that, it is really just a waiting game. Give it TLC, and it may make it but it may not.