Palm Tree Winter Protection
Last spring I planted two California Fan Palms and one Mexican Fan Palm in my yard. These plants did excellent until the end of December when it got to about 18-19 degrees one night. I wrapped them in clear plastic hoping to keep the wind and cold off but the fronds turned brown. I clipped all the fronds off and wrapped the trunks with burlap and put a flood light next to the plant and covered with a clear plasic bag to hold in heat. I turn the lights on when its below 30. Is this enough protection to make them live through the winter? The trees are probably 3-4 years old I'm guessing. I am located just south of Memphis where we get the cold snaps that drop us into the 20's and upper teens occasionally, otherwise it is pretty mild. Any help would be greatly appreciated.