I had seen a video online of a guy in Montreal Canada who had been growing palms and protects them in giant tents over winter but the one papm he didn't get covered in time was a queen palm it spent a week of nights at around -5 degrees Fahrenheit I was wondering that of I have a little protection on a queen palm will it survive he normally get 2-3 days of snow and melts by mid afternoon and lowes I've ever seen was -3 I love in st.louis zone 6b/7a any other hardy palms hardy for the area?