Re: "Marginal" Protection
Last winter in Northern California was one of the coldest in 17 years. I'm normally a zone 9 with lows in mid 20's. But we had 2 nights back to back with lows of 17 and 18 F.
All my bananas (4-7 ft tall) were wrapped with 3 layers of Agribon 50. Dwarf Orinoco, Raja Puri, Ice Cream, D. Namwah, Goldfinger, Sweetheart, Manzano, Misi Luki. They all died to the ground. The Goldfinger and Sweetheart never came back.
I'm sure some warm lighting under the frost blankets would have been helpful, but that I didn't do. I'm trying again with the same approach, hoping that it won't be another extremely cold winter.
Forestville, CA Zone 9