I have some Bismarckia seedlings that didn't get damaged by the long cold spell this winter. I grew them from seed given out at Palm Fest in Ft Lauderdale several years ago. About half came up silver and half were blueish green. I still have a few of the blue/green plants. They were next to my unheated garage so somewhat protected from the north wind. The Syagrus romanzoffiana plants next to them were burned.