I live in zone 8 in Oregon, where the soil is wet all winter and we often have frost and a little freezing weather, with dry summers. I lost a large D. Antarctica because I didn't know I was supposed to keep the trunk misted during the summer. I have a tropicalesque garden and want to try another treefern. Does anyone have suggestions for me, such as wrapping it in winter or anything else I should do? I have palms and bananas and would love to see a big treefern growing.